Research on clinical infectious diseases and outbreak investigations. Postinfectious syndromes. Several projects on the importance of antimicrobial resistance and ESBLs on morbidity and mortality in children in Tanzania. Placebo-controlled RCTs on cotrimoxazole prophylaxis in HIV infected patients with CD4 count over 350, and on hepatitis C treatment. Recently completed RCT on  probiotics to newborn babies. Clinical studies on COVID-19 including attack rate studies, vaccination and postinfectious complications. Ongoing placebo-controlled trial on antiviral treatment of COVID-19 and effect on long-term complications.

Experience in phase 1 studies, cohohort and case control studies, and randomized controlled trials. 

Study protocol

• Bjørn Blomberg; Nikolai Norevik Myklebust; Oddvar Oppegaard et al. (2025). Randomized trial of nirmatrelvir/ritonavir versus placebo for adults with acute COVID-19 to prevent long COVID: PanoramicNOR Trial | Trials | Full Text. (external link)

Academic article

• Torunn Hjøllo; Eirik Bratland; Hans Steinsland et al. (2018). Longitudinal cohort study of serum antibody responses towards Giardia lamblia variant-specific surface proteins in a non-endemic area. (external link)
• Øyvind Kommedal; Kristine Ringheim Kvello; Rune Skjåstad et al. (2009). Direct 16S rDNA sequencing from clinical specimens with special focus on poly-bacterial samples and interpretation of mixed DNA chromatograms. (external link)
• Åse Berg; Sam Patel; Miguel Gonca et al. (2014). Cytokine network in adults with falciparum malaria and HIV-1: increased IL-8 and IP-10 levels are associated with disease severity. (external link)
• Sabrina John Moyo; Gro Njølstad; Mecky I Matee et al. (2011). Age specific aetiological agents of diarrhoea in hospitalized children aged less than five years in Dar es Salaam, Tanzania. (external link)
• Bjørn Blomberg; Karim P Manji; Willy K. Urassa et al. (2007). Antimicrobial resistance predicts death in Tanzanian children with bloodstream infections: a prospective cohort study. (external link)
• S.C. Mohn; Arve Ulvik; Roland Jureen et al. (2004). Duplex real-time PCR assay for rapid detection of ampicillin-resistant Enterococcus faecium. (external link)
• Eric Stephen Lugada; Johathan Mermin; Eva Birgitta Åsjø et al. (2004). Immunoglobulin levels amongst persons with and without human immunodeficiency virus type 1 infection in Uganda and Norway. (external link)
• Audun Aase; Halvor Sommerfelt; Lizette Balle Petersen et al. (2016). Salivary IgA from the sublingual compartment as a novel noninvasive proxy for intestinal immune induction. (external link)
• Tiina Rekand; Inga Strand; Nina Langeland et al. (2005). Kan poliomyelitt utryddes i nær fremtid?. (external link)
• Katrin Ruth Sigurdardottir; Stig Harthug; Asbjørn Digranes et al. (2005). A multi-centre prospective study of febrile neutropenia in Norway: microbiological findings and antimicrobial susceptibility. (external link)
• Christel Gill Haanshuus; Sara Chandy; Anand Manoharan et al. (2016). A high malaria prevalence identified by PCR among patients with acute undifferentiated fever in India. (external link)
• Sabrina J. Moyo; Samuel Y Maselle; Mecky I Matee et al. (2007). Identification of diarrheagenic Escherichia coli isolated from infants and children in Dar es Salaam, Tanzania. (external link)
• Nina Urke Ertesvåg; Julie Xiao; Fan Zhou et al. (2022). A rapid antibody screening haemagglutination test for predicting immunity to SARS-CoV-2 variants of concern. (external link)
• Arvid E Nilsen; Davis Mwakagile; Howard Marsden et al. (2005). Prevalence of, and risk factors for, HSV-2 antibodies in sexually transmitted disease patients, healthy pregnant females, blood donors and medical students in Tanzania and Norway. (external link)
• Kurt Hanevik; Kristine Mørch; Geir Egil Eide et al. (2008). Effects of albendazole/metronidazole or tetracycline/folate treatments on persisting symptoms after Giardia infection: A randomized open clinical trial. (external link)
• Gro Elizabeth Ann Strøm; Christel Gill Haanshuus; Maulidi Fataki et al. (2013). Challenges in diagnosing paediatric malaria in Dar es Salaam, Tanzania. (external link)
• Magnus Lindh; Martin Lagging; Martti Färkkilä et al. (2011). Interleukin 28B gene variation at rs12979860 determines early viral kinetics during treatment in patients carrying genotypes 2 or 3 of hepatitis C virus. (external link)
• C Klingenberg; R Olomi; M Oneko et al. (2004). Neonatal morbidity and mortality in a Tanzanian tertiary care referral hospital. (external link)
• Sabrina John Moyo; Said Aboud; Bjørn Blomberg et al. (2014). High nasal carriage of methicillin-resistant staphylococcus aureus among healthy tanzanian under-5 children. (external link)
• Oddvar Oppegaard; Haima Mylvaganam; Steinar Skrede et al. (2014). Sequence diversity of sicG among group C and G Streptococcus dysgalactiae subspecies equisimilis isolates associated with human infections in western Norway. (external link)
• Kristin Mæland Mellingen; Anita Midtun; Kurt Hanevik et al. (2010). Post epidemic giardiasis and gastrointestinal symptoms among preschool children in Bergen, Norway. A cross-sectional study. (external link)
• Mai Chi Trieu; Amit Bansal; Anders Madsen et al. (2020). SARS-CoV-2-specific neutralizing antibody responses in Norwegian healthcare workers after the first wave of COVID-19 pandemic: a prospective cohort study. (external link)
• Hilde Marie Torgauten; Therese Bredholt Onyango; Sonja Ljostveit et al. (2024). Hospitalisations and humoral COVID-19 vaccine response in vaccinated rituximab-treated multiple sclerosis patients. (external link)
• Nina Langeland; Lars Haarr; F. Mhalu (1998). Prevalence of HSV-2 antibodies among STD clinic patients in Tanzania. (external link)
• Knut-Arne Wensaas; Nina Langeland; Guri Rørtveit (2010). Post-infectious gastrointestinal symptoms after acute Giardiasis. A 1-year follow-up in general practice. (external link)
• Håvard Aamodt; Stein Christian Mohn; Samuel Y Maselle et al. (2015). Genetic relatedness and risk factor analysis of ampicillin-resistant and high-level gentamicin-resistant enterococci causing bloodstream infections in Tanzanian children. (external link)
• Sabrina John Moyo; Joel Manyahi; Bjørn Blomberg et al. (2020). Bacteraemia, malaria, and case fatality among children hospitalized with fever in Dar es Salaam, Tanzania. (external link)
• Sverre Litleskare; Guri Rørtveit; Geir Egil Eide et al. (2019). Quality of life and its association with irritable bowel syndrome and fatigue ten years after giardiasis. (external link)
• Gro Elizabeth Ann Strøm; Sabrina John Moyo; Maulidi Fataki et al. (2014). PCR targeting Plasmodium mitochondrial genome of DNA extracted from dried blood on filter paper compared to whole blood. (external link)
• Sabrina John Moyo; Øyvind Kommedal; Bjørn Blomberg et al. (2017). Comprehensive analysis of prevalence, epidemiologic characteristics, and clinical characteristics of monoinfection and coinfection in diarrheal diseases in children in Tanzania. (external link)
• Haima Mylvaganam; Tina Ingeborg Bruun; Hallvard Andreas Vindenes et al. (2009). Molecular epidemiological investigation of an outbreak of invasive beta-haemolytic streptococcal infection in western Norway. (external link)
• Peter Derek Christian Leutscher; Martin Lagging; Mads Rauning Buhl et al. (2010). Evaluation of depression as a risk factor for treatment failure in chronic hepatitis C. (external link)
• Sabrina John Moyo; Kurt Hanevik; Bjørn Blomberg et al. (2014). Prevalence and molecular characterisation of human adenovirus in diarrhoeic children in Tanzania; a case control study. (external link)
• Upendo O. Kibwana; Joel Manyahi; Helene Heitmann Sandnes et al. (2022). Gastrointestinal colonization of extended-spectrum beta-lactamase-producing bacteria among children below five years of age hospitalized with fever in Dar es Salaam, Tanzania. (external link)
• Stig Harthug; Geir Egil Eide; Nina Langeland (2000). Nosocomial outbreak of ampicillin resistant Enterococcus faecium: Risk factors for infection and fatal outcome. (external link)
• Siri Tandberg Nygård; Steinar Skrede; Nina Langeland et al. (2017). An observational study of community-acquired severe sepsis comparing intensive care and non-intensive care patients. (external link)
• Karin Maria Nygård; Barbara Schimmer; Øystein Søbstad et al. (2006). A large community outbreak of waterborne giardiasis-delayed detection in a non-endemic urban area. (external link)
• Christian Klotz; Marc William Schmid; Katja Winter et al. (2023). Highly contiguous genomes of human clinical isolates of Giardia duodenalis reveal assemblage-and sub-assemblage-specific presence–absence variation in protein-coding genes. (external link)
• Kamaldeen Baba; Anwar A. Hoosen; Nina Langeland et al. (2008). Adenosine deaminase activity is a sensitive marker for the diagnosis of tuberculous pleuritis in patients with very low CD4 counts. (external link)
• Camilla Tvedt Ekanger; Fan Zhou; Dana Bohan et al. (2022). Human organotypic airway and lung organoid cells of bronchiolar and alveolar differentiation are permissive to infection by influenza and SARS-CoV-2 respiratory virus. (external link)
• Kamaldeen Baba; Anne Ma Dyrhol-Riise; Lisbet Sviland et al. (2008). Rapid and Specific Diagnosis of Tuberculous Pleuritis With Immunohistochemistry by Detecting Mycobacterium tuberculosis Complex Specific Antigen MPT64 in Patients From a HIV Endemic Area. (external link)
• Karl Erik Muller; Bjørn Blomberg; Marit Gjerde Tellevik et al. (2021). Leishmaniasis i Norge. (external link)
• Mike Zangenberg; ØYSTEIN HAARKLAU JOHANSEN; Alemseged Abdissa et al. (2019). Prolonged and persistent diarrhoea is not restricted to children with acute malnutrition: an observational study in Ethiopia. (external link)
• Steinar Skrede; Hans Steinsland; Halvor Sommerfelt et al. (2014). Experimental infection of healthy volunteers with enterotoxigenic Escherichia coli wild-type strain TW10598 in a hospital ward. (external link)
• Kurt Hanevik; Elisabeth Wik; Nina Langeland et al. (2018). Transient elevation of anti-transglutaminase and anti-endomysium antibodies in Giardia infection. (external link)
• Gunnhild Sellevoll Hunskår; Guri Rørtveit; Sverre Litleskare et al. (2021). Prevalence of fibromyalgia 10 years after infection with Giardia lamblia: A controlled prospective cohort study. (external link)
• Kurt Hanevik; Knut-Arne Wensaas; Guri Rørtveit et al. (2014). Irritable bowel syndrome and chronic fatigue 6 years after Giardia infection: A controlled prospective cohort study. (external link)
• Joel Manyahi; Sabrina John Moyo; Said Aboud et al. (2021). Predominance of PVL-negative community-associated methicillin-resistant Staphylococcus aureus sequence type 8 in newly diagnosed HIV-infected adults, Tanzania. (external link)
• Torunn Annie Pedersen; Marit Gjerde Tellevik; Øyvind Kommedal et al. (2020). Horizontal plasmid transfer among klebsiella pneumoniae isolates is the key factor for dissemination of extended-spectrum β-lactamases among children in Tanzania. (external link)
• Lena Hansen; Karl Albert Brokstad; Amit Bansal et al. (2023). Durable immune responses after BNT162b2 vaccination in home-dwelling old adults. (external link)
• Sabrina John Moyo; Bjørg Haldorsen; Said Aboud et al. (2014). Identification of VIM-2-producing Pseudomonas aeruginosa from Tanzania is associated with sequence types 244 and 640 and the location of blaVIM-2 in a TniC integron. (external link)
• Joel Manyahi; Sabrina John Moyo; Marit Gjerde Tellevik et al. (2020). High prevalence of fecal carriage of extended spectrum β-lactamase-producing enterobacteriaceae among newly HIV-diagnosed adults in a community setting in Tanzania. (external link)
• Stig Harthug; Geir Egil Eide; Nina Langeland (2000). Nosocomial outbreak of ampicillin resistant Enterococcus faecium. Risk factors for infection and fatal outcome. (external link)
• Kurt Hanevik; Vernesa Dizdar; Nina Langeland et al. (2009). Development of functional gastrointestinal disorders after Giardia lamblia infection. (external link)
• Bjørn Blomberg; Nina Langeland (2010). Tuberculous meningitis and resistance to isoniazid. (external link)
• Sabrina John Moyo; Bjørn Blomberg; Kurt Hanevik et al. (2014). Genetic diversity of circulating rotavirus strains in Tanzania prior to the introduction of vaccination. (external link)
• Nina Langeland; Lars Haarr; F. Mhalu (1998). Prevalence of HSV-2 antibodies among STD clinic patients in Tanzania. (external link)
• Øystein Haarklau Johansen; Alemseged Abdissa; Mike Zangenberg et al. (2022). A comparison of risk factors for cryptosporidiosis and non-cryptosporidiosis diarrhoea: A case-case-control study in Ethiopian children. (external link)
• Roland Jureen; Stig Harthug; Steinar Sørnes et al. (2004). Comparative analysis of amplified fragment length polymorphism and pulsed field gel electrophoresis in a hospital outbreak and subsequent endemicity of ampicillin-resistant Enterococcus faecium. (external link)
• Faustine Engelbert Ndugulile; Roland Jureen; Stig Harthug et al. (2005). Extended spectrum beta-lactamases among Gram-negative bacteria of nosocomial origin from an Intensive Care Unit of a tertiary health facility in Tanzania. (external link)
• T Eide; HS Marsden; DA Leib et al. (1998). Identification of the UL4 protein of herpes simplex virus type 1. (external link)
• Knut-Arne Wensaas; Nina Langeland; Guri Rørtveit (2009). Prevalence of recurring symptoms after infection with Giardia lamblia in a non-endemic area. (external link)
• Øystein Haarklau Johansen; Alemseged Abdissa; Ola Bjørang et al. (2022). Oocyst Shedding Dynamics in Children with Cryptosporidiosis: a Prospective Clinical Case Series in Ethiopia. (external link)
• Gro Elizabeth Ann Strøm; Marit Gjerde Tellevik; Maulidi Fataki et al. (2013). No asymptomatic malaria parasitaemia found among 108 young children at one health facility in Dar es Salaam, Tanzania. (external link)
• Marit Gjerde Tellevik; Bjørn Blomberg; Øyvind Kommedal et al. (2016). High prevalence of faecal carriage of esbl-producing enterobacteriaceae among children in Dar es Salaam, Tanzania. (external link)
• Øyvind Kommedal; Keith Simmon; Dilek Karaca et al. (2012). Dual-priming oligonucleotides for broad-range amplification of the bacterial 16S rRNA gene directly from human clinical specimens. (external link)
• Karolina Rembeck; Jesper Waldenström; Kristoffer Hellstrand et al. (2014). Variants of the inosine triphosphate pyrophosphatase gene are associated with reduced relapse risk following treatment for HCV genotype 2/3. (external link)
• Matej Radunovic; Christian Klotz; Christina Skår Saghaug et al. (2017). Genetic variation in potential Giardia vaccine candidates cyst wall protein 2 and α1-giardin. (external link)
• Elisabeth Strand; Lucy J Robertson; K Hanevik et al. (2008). Sensitivity of a Giardia antigen test in persistent giardiasis following an extensive outbreak. (external link)
• MG Tellevik; johanna u ericson Sollid; Bjørn Blomberg et al. (2007). Extended-spectrum beta-lactamase-type SHV-12-producing Enterobacteriaceae causing septicemia in Tanzanian children: vectors for horizontal transfer of antimicrobial resistance. (external link)
• Stig Harthug; Nina Langeland; A. Digranes et al. (1998). Infeksjoner forårsaket av multiresistente enterokokker i Norge. (external link)
• Åse Berg; Sam Patel; Marit Gjerde Tellevik et al. (2020). Plasma parasitemia as assessed by quantitative PCR in relation to clinical disease severity in African adults with falciparum malaria with and without HIV co-infection. (external link)
• Knut-Arne Wensaas; Kurt Hanevik; Trygve Hausken et al. (2016). Postinfectious and sporadic functional gastrointestinal disorders have different prevalences and rates of overlap: results from a controlled cohort study 3 years after acute giardiasis. (external link)
• Åsa Alsiö; Karolina Rembeck; Galia Askarieh et al. (2012). Impact of Obesity on the Bioavailability of Peginterferon-alpha 2a and Ribavirin and Treatment Outcome for Chronic Hepatitis C Genotype 2 or 3. (external link)
• Kristine Mørch; Kurt Hanevik; Lucy J. Robertson et al. (2008). Treatment-ladder and genetic characterisation of parasites in refractory giardiasis after an outbreak in Norway. (external link)
• Karolina Rembeck; Cristina Maglio; Martin Lagging et al. (2012). PNPLA 3 I148M genetic variant associates with insulin resistance and baseline viral load in HCV genotype 2 but not in genotype 3 infection. (external link)
• Bjørn Blomberg; Kristin Greve-Isdahl Mohn; Karl Albert Brokstad et al. (2021). Long COVID in a prospective cohort of home-isolated patients. (external link)
• Gro Elizabeth Ann Strøm; Marit Gjerde Tellevik; Kurt Hanevik et al. (2014). Comparison of four methods for extracting DNA from dried blood on filter paper for PCR targeting the mitochondrial Plasmodium genome. (external link)
• Sabrina John Moyo; Joel Manyahi; Said Aboud et al. (2025). Extended-spectrum-β-lactamase-producing Gram-negative bacteria are associated with high mortality in children with bloodstream infections in Dar es Salaam, Tanzania. (external link)
• Richard N. Goodman; Sabrina John Moyo; Ilinca Memelis et al. (2025). Comparative genomics of blood and faecal E. coli and K. pneumoniae isolates from neonates with bloodstream infections in Tanzania. (external link)
• Sabrina J Moyo; Gro Njølstad; M Kirsti Vainio et al. (2007). Prevalence of enteropathogenic viruses and molecular characterization of group A rotavirus among children with diarrhea in Dar es Salaam Tanzania. (external link)
• Upendo O. Kibwana; Joel Manyahi; Helene Heitmann Sandnes et al. (2023). Fluoroquinolone resistance among fecal extended spectrum βeta lactamases positive Enterobacterales isolates from children in Dar es Salaam, Tanzania. (external link)
• Knut Erik Emberland; Knut-Arne Wensaas; Sverre Litleskare et al. (2021). Clinical features of gastroenteritis during a large waterborne Campylobacter outbreak in Askøy, Norway. (external link)
• SC Mohn; Stig Harthug; Nina Langeland (2000). Outbreak of multiresistant Enterococcus faecium in a Norwegian university hospital - risk factors for faecal colonisation. (external link)
• WK Urassa; EA Haule; C Kagoma et al. (2000). Antimicrobial sensitivity of Staphylococcus aureus strains at Muhimbili Medical Centre, Dar es Salaam, Tanzania: low prevalence of methicillin resistant Staphylococcus aureus. (external link)
• Stig Harthug; A. Digranes; JE Kristiansen et al. (2000). Emergence of vancomycinresistant E. faecium in a clonal hospital outbreak of multiresistant E. faecium. (external link)
• Kristine Mørch; Kurt Hanevik; Ann Christin Rivenes et al. (2013). Chronic fatigue syndrome 5 years after giardiasis: differential diagnoses, characteristics and natural course. (external link)
• Kurt Hanevik; Christina Skår Saghaug; Maren Aaland et al. (2022). No difference in serum levels of B-cell activating receptor and antibodies against cytolethal distending toxin B and flagellin in post-infectious irritable bowel syndrome and chronic fatigue syndrome after Giardia infection. (external link)
• Roland Jureen; S.C. Mohn; Stig Harthug et al. (2004). Role of penicillin-binding protein 5 C-terminal amino acid substitutions in conferring ampicillin resistance in Norwegian clinical strains of Enterococcus faecium. (external link)
• K Mørch; K Hanevik; Lucy J Robertson et al. (2008). Treatment-ladder and genetic characterisation of parasites in refractory giardiasis after an outbreak in Norway. (external link)
• Bjørn Blomberg; Roland Jureen; Karim P Manji et al. (2005). High rate of fatal cases of pediatric septicemia caused by gram-negative bacteria with extended-spectrum beta-lactamases in Dar es Salaam, Tanzania. (external link)
• Christel Gill Haanshuus; Kristine Mørch; Bjørn Blomberg et al. (2019). Assessment of malaria real-time PCR methods and application with focus on lowlevel parasitaemia. (external link)
• Mabula Joseph Kasubi; Arvid E Nilsen; Howard S. Marsden et al. (2005). A branched, synthetic oligopeptide corresponding to a region of glycoprotein G of HSV-1 reacts sensitively and specifically with HSV-1 antibodies in an ELISA. (external link)
• Arild Iversen; Bjørn Blomberg; Kjell Haug et al. (2024). Symptom trajectories of post-COVID sequelae in patients with acute Delta or Omicron infection in Bergen, Norway. (external link)
• Kurt Hanevik; Einar Klæboe Kristoffersen; Kristine Mørch et al. (2017). Giardia-specific cellular immune responses in post-giardiasis chronic fatigue syndrome. (external link)
• Bård Reiakvam Kittang; Nina Langeland; Steinar Skrede et al. (2010). Two unusual cases of severe soft tissue infection caused by streptococcus dysgalactiae subsp. equisimilis. (external link)
• Tiina Rekand; Johan Arild Aarli; Nina Langeland (1997). Poliomyelitt - ikke en utdødd sykdom. (external link)
• Heidi Syre; Marius Eduardo Brå Obreque; Ingvild Dalen et al. (2022). The performances of three commercially available assays for the detection of SARS‐CoV‐2 antibodies at different time points following SARS‐CoV‐2 infection. (external link)
• Cristina Martínez; Felix Lasitschka; Cornelia Thöni et al. (2020). Comparative expression profiling in the intestine of patients with Giardia-induced postinfectious functional gastrointestinal disorders. (external link)
• Joel Manyahi; Sabrina John Moyo; Marit Gjerde Tellevik et al. (2017). Detection of CTX-M-15 beta-lactamases in Enterobacteriaceae causing hospital- and community-acquired urinary tract infections as early as 2004, in Dar es Salaam, Tanzania. (external link)
• Therese Bredholt Onyango; Fan Zhou; Geir Bredholt et al. (2023). SARS-CoV-2 specific immune responses in overweight and obese COVID-19 patients. (external link)
• Oddvar Oppegaard; Brita Skodvin; Anne-Kristine Halse et al. (2013). CD64 as a potential biomarker in septic arthritis. (external link)
• Lucy J Robertson; K Hanevik; Angel A Escobedo et al. (2010). Giardiasis ? why do the symptoms sometimes never stop?. (external link)
• Åsa Alsiö; Peer Brehm Christensen; Martti Färkkilä et al. (2010). Nonresponder Patients with Hepatitis C Virus Genotype 2/3 Infection: A Question of Low Systemic Interferon Concentrations?. (external link)
• Knut-Arne Wensaas; Nina Langeland; Guri Rørtveit (2007). Avdekking av giardiasisutbruddet i Bergen 2004. (external link)
• Trond Bruun; Oddvar Oppegaard; Karl Ove Hufthammer et al. (2016). Early Response in Cellulitis: A Prospective Study of Dynamics and Predictors. (external link)
• Annette Onken; Sabrina John Moyo; Mohammed Khamis Miraji et al. (2024). Predominance of multidrug-resistant Salmonella Typhi genotype 4.3.1 with low-level ciprofloxacin resistance in Zanzibar. (external link)
• Amit Bansal; Mai Chi Trieu; Kristin Greve-Isdahl Mohn et al. (2023). Risk assessment and antibody responses to SARS-CoV-2 in healthcare workers. (external link)
• Kristine Mørch; Kurt Hanevik; Guri Rørtveit et al. (2009). Severity of Giardia infection associated with post-infectious fatigue and abdominal symptoms two years after. (external link)
• Joel Manyahi; Marit Gjerde Tellevik; Faustine Engelbert Ndugulile et al. (2017). Molecular Characterization of Cotrimoxazole Resistance Genes and Their Associated Integrons in Clinical Isolates of Gram-Negative Bacteria from Tanzania. (external link)
• Siri Kratter Abrahamsen; Cathrine Ingebjørg Nødtvedt Haugen; Priscilla Rupali et al. (2013). Fever in the tropics: aetiology and case-fatality - a prospective observational study in a tertiary care hospital in South India. (external link)
• Kristine Mørch; Anand Manoharan; Sara Chandy et al. (2023). Clinical features and risk factors for death in acute undifferentiated fever: A prospective observational study in rural community hospitals in six states of India. (external link)
• Martin Lagging; Nina Langeland; Court Pedersen et al. (2008). Randomized comparison of 12 or 24 weeks of peginterferon alpha-2a and ribavirin in chronic hepatitis C virus genotype 2/3 infection. (external link)
• Sunniva Todnem Sakkestad; Hans Steinsland; Steinar Skrede et al. (2019). A New Human Challenge Model for Testing Heat-Stable Toxin-Based Vaccine Candidates for Enterotoxigenic Escherichia Coli Diarrhea - Dose Optimization, Clinical Outcomes, and CD4+ T Cell Responses. (external link)
• Kamaldeen Baba; Sharad Pathak; Lisbet Sviland et al. (2008). Real-time quantitative PCR in the diagnosis of tuberculosis in formalin-fixed paraffin-embedded pleural tissue in patients from a high HIV endemic area. (external link)
• Sabrina John Moyo; Martin Steinbakk; Said Aboud et al. (2012). Penicillin resistance and serotype distribution of Streptococcus pneumoniae in nasopharyngeal carrier children under 5 years of age in Dar es Salaam, Tanzania. (external link)
• Kurt Hanevik; Rasmus Bakken; Hans-Richard Brattbakk et al. (2015). Whole genome sequencing of clinical isolates of Giardia lamblia. (external link)
• Nicolay Mortensen; Solveig Aalstad Jonasson; Ingrid Viola Lavesson Thulin et al. (2021). Characteristics of hospitalized patients during a large waterborne outbreak of Campylobacter jejuni in Norway. (external link)
• Jesper Waldenström; Kristina Nyström; Staffan Nilsson et al. (2020). The relation of 25-hydroxy vitamin D concentrations to liver histopathology, seasonality and baseline characteristics in chronic hepatitis C virus genotype 2 or 3 infection. (external link)
• Arvid E Nilsen; Elling Ulvestad; Howard Marsden et al. (2003). Performance characteristics of a glycoprotein G based oligopeptide (peptide 55) and two different methods using the complete glycoprotein as assays for detection of anti-HSV-2 antibodies in human sera. (external link)
• Kristine Mørch; Anand Manoharan; Sara Chandy et al. (2017). Acute undifferentiated fever in India: A multicentre study of aetiology and diagnostic accuracy. (external link)
• Kristin Greve-Isdahl Mohn; Birger Norderud Lærum; Steinar Skrede et al. (2013). Reduced Hospital Stay in Influenza Patients after Mass Vaccination during the 2009 Influenza Pandemic in Norway. (external link)
• Thor Ueland; Rebecca Jane Cox; Annika Elisabet Michelsen et al. (2025). Markers of T cell activation and exhaustion in plasma are associated with persistent symptoms up to 18 months following mild SARS-CoV-2 infection. (external link)
• Trond Bruun; Bård Reiakvam Kittang; Bram Johan de Hoog et al. (2013). Necrotizing soft tissue infections caused by Streptococcus pyogenes and Streptococcus dysgalactiae subsp equisimilis of groups C and G in western Norway. (external link)
• Joel Manyahi; Sabrina John Moyo; Said Aboud et al. (2020). High rate of antimicrobial resistance and multiple mutations in the dihydrofolate reductase gene among Streptococcus pneumoniae isolated from HIV-infected adults in a community setting in Tanzania. (external link)
• Robert Persson; Knut-Arne Wensaas; Kurt Hanevik et al. (2015). The relationship between irritable bowel syndrome, functional dyspepsia, chronic fatigue and overactive bladder syndrome: A controlled study 6 years after acute gastrointestinal infection. (external link)
• Vernesa Dizdar; Trygve Hausken; Ole Didrik Lærum et al. (2018). Prolonged duodenal mucosal lymphocyte alterations in patients with and without postinfectious functional gastrointestinal disorders after Giardia infection. (external link)
• Francis F. Fredrick; Paschal J. Ruggajo; Gopal Basu et al. (2015). Global collaboration bears fruit: Tanzania report. (external link)
• Lucy J. Robertson; Torunn Forberg; Lene Hermansen et al. (2007). Molecular characterisation of Giardia isolates from clinical infections following a waterborne outbreak. (external link)
• Joel Manyahi; Sabrina John Moyo; Nina Langeland et al. (2023). Genetic determinants of macrolide and tetracycline resistance in penicillin non-susceptible Streptococcus pneumoniae isolates from people living with HIV in Dar es Salaam, Tanzania. (external link)
• Pål Voltersvik; Alfred Halstensen; Nina Langeland et al. (2000). Eradication of non-typhoid salmonellae in acute enteritis after therapy with ofloxacin for 5 or 10 days. (external link)
• Bård Reiakvam Kittang; Steinar Skrede; Nina Langeland et al. (2011). emm gene diversity, superantigen gene profiles and presence of SlaA among clinical isolates of group A, C and G streptococci from western Norway. (external link)
• Mabula Joseph Kasubi; Arvid E Nilsen; Howard S. Marsden et al. (2006). Prevalence of antibodies against herpes simplex virus types 1 and 2 in children and young people in an urban region in Tanzania. (external link)
• Hogne Vaagland; Bjørn Blomberg; Carsten Krüger et al. (2004). Nosocomial outbreak of neonatal Salmonella enterica serotype Enteritidis meningitis in a rural hospital in northern Tanzania. (external link)
• Bjørn Blomberg; Davis S.M. Mwakagile; Willy K. Urassa et al. (2004). Surveillance of antimicrobial resistance at a tertiary hospital in Tanzania. (external link)
• Elisabeth Astrup Strand; Lucy J. Robertson; Kurt Hanevik et al. (2008). Sensitivity of a Giardia antigen test in persistent giardiasis following an extensive outbreak. (external link)
• Jesper Waldenström; Kristoffer Hellstrand; Johan Westin et al. (2021). Presence of interferon-λ 4, male gender, absent/mild steatosis and low viral load augment antibody levels to hepatitis C virus. (external link)
• Kanika Kuwelker; Nina Langeland; Iren Høyland Löhr et al. (2021). Use of probiotics to reduce infections and death and prevent colonization with extended-spectrum beta-lactamase (ESBL)-producing bacteria among newborn infants in Tanzania (ProRIDE Trial): study protocol for a randomized controlled clinical trial. (external link)
• Arvid E Nilsen; Davis Mwakagile; Guerino Chalamila et al. (2006). Demographic and behavioural factors in Tanzanian and Norwegian patients with sexually transmitted infections. (external link)
• Aishath Shaaly; Marit Gjerde Tellevik; Nina Langeland et al. (2005). Comparison of serotyping, pulsed field gel electrophoresis and amplified fragment length polymorphism for typing of Streptococcus pneumoniae. (external link)
• Heidi Kapstad; Berit Rokne Hanestad; BR Hanestad et al. (2008). Cutpoints for mild, moderate and severe pain in patients with osteoarthritis of the hip or knee ready for joint replacement surgery. (external link)
• Anette Susanne Bøe Wolff; Lena Hansen; Marianne Aardal Grytaas et al. (2023). Vaccination prevents severe COVID-19 outcome in patients with neutralizing type 1 interferon autoantibodies. (external link)
• Elisabeth Berg Fjelltveit; Rebecca Jane Cox Brokstad; Jørgen Østensjø et al. (2020). Point-of-care influenza testing impacts clinical decision, patient flow and length of stay in hospitalized adults. (external link)
• Martin Lagging; Karolina Rembeck; Mads Rauning Buhl et al. (2013). Retreatment with peg-interferon and ribavirin in patients with chronic hepatitis C virus genotype 2 or 3 infection with prior relapse. (external link)
• Nina Urke Ertesvåg; Arild Iversen; Bjørn Blomberg et al. (2023). Post COVID-19 condition after delta infection and omicron reinfection in children and adolescents. (external link)
• Åse Berg; Kari Otterdal; Sam Patel et al. (2015). Complement activation correlates with disease severity and contributes to cytokine responses in plasmodium falciparum malaria. (external link)
• Lucy J Robertson; Lene Hermansen; Bjørn Kåre Gjerde et al. (2006). Application of Genotyping during an Extensive Outbreak of Waterborne Giardiasis in Bergen, Norway, during Autumn and Winter 2004. (external link)
• Marit Gjerde Tellevik; Sabrina John Moyo; Bjørn Blomberg et al. (2015). Prevalence of Cryptosporidium parvum/hominis, Entamoeba histolytica and Giardia lamblia among Young Children with and without Diarrhea in Dar es Salaam, Tanzania. (external link)
• Lars Haarr; Arvid E Nilsen; Per Knappskog et al. (2014). Stability of glycoprotein gene sequences of herpes simplex virus type 2 from primary to recurrent human infection, and diversity of the sequences among patients attending an STD clinic. (external link)
• Jesper Waldenström; Martti A. Färkkilä; Karolina Rembeck et al. (2016). Short interferon and ribavirin treatment for HCV genotype 2 or 3 infection: NORDynamIC trial and real-life experience. (external link)
• Christina Skår Saghaug; Steinar Sørnes; Dimitra Peirasmaki et al. (2016). Human Memory CD4+ T Cell Immune Responses against Giardia lamblia. (external link)
• Knut-Arne Wensaas; Nina Langeland; Kurt Hanevik et al. (2012). Irritable bowel syndrome and chronic fatigue 3 years after acute giardiasis: historic cohort study. (external link)
• Elisabeth Berg Fjelltveit; Bjørn Blomberg; Kanika Kuwelker et al. (2022). Symptom Burden and Immune Dynamics 6 to 18 Months Following Mild Severe Acute Respiratory Syndrome Coronavirus 2 Infection (SARS-CoV-2): A Case-control Study. (external link)
• Kamaldeen Baba; Steinar Sørnes; Anwar A. Hoosen et al. (2008). Evaluation of immune responses in HIV infected patients with pleural tuberculosis by the QuantiFERON (R) TB-Gold interferon-gamma assay. (external link)
• Kari Otterdal; Åse Berg; Annika Elisabet Michelsen et al. (2021). IL-18 and IL-18 binding protein are related to disease severity and parasitemia during falciparum malaria. (external link)
• Gunnhild Sellevoll Hunskår; Bjørn Bjorvatn; Knut-Arne Wensaas et al. (2016). Excessive daytime sleepiness, sleep need and insomnia 3 years after Giardia infection: A cohort study. (external link)
• Marius Myrstad; Kanika Kuwelker; Sigurd Haakonsen et al. (2021). Delirium screening with 4AT in patients aged 65 years and older admitted to the Emergency Department with suspected sepsis: a prospective cohort study. (external link)
• Sverre Rørtveit; Dag Harald Skutlaberg; Nina Langeland et al. (2011). Impetigo in a population over 8.5 years: Incidence, fusidic acid resistance and molecular characteristics. (external link)
• Kanika Kuwelker; Fan Zhou; Bjørn Blomberg et al. (2021). Attack rates amongst household members of outpatients with confirmed COVID-19 in Bergen, Norway: A case-ascertained study. (external link)
• Court Pedersen; Åsa Alsiö; Martin Lagging et al. (2011). Ribavirin plasma concentration is a predictor of sustained virological response in patients treated for chronic hepatitis C virus genotype 2/3 infection. (external link)
• Lucy J Robertson; Torunn Forberg; Lene Hermansen et al. (2007). Molecular characterisation of Giardia isolates from clinical infections following a waterborne outbreak. (external link)
• Fan Zhou; Juha Vahokoski; Siri Øyen et al. (2024). Impact of ageing on homologous and human-coronavirus-reactive antibodies after SARS-CoV-2 vaccination or infection. (external link)
• Getnet Tesfaw; Dawd S. Siraj; Alemseged Abdissa et al. (2024). Gut microbiota patterns associated with duration of diarrhea in children under five years of age in Ethiopia. (external link)
• Knut-Arne Wensaas; Nina Langeland; Guri Rørtveit (2009). Prevalence of recurring symptoms after infection with Giardia lamblia in a non-endemic area. (external link)
• Lucy J Robertson; Torunn Forberg; Lene Hermansen et al. (2006). Cryptosporidium parvum infections in Bergen, Norway, during an extensive outbreak of waterborne giardiasis in autumn and winter 2004. (external link)
• Sverre Rørtveit; Dag Harald Skutlaberg; Nina Langeland et al. (2014). The decline of the impetigo epidemic caused by the epidemic European fusidic acid-resistant impetigo clone: an 11.5-year population-based incidence study from a community in Western Norway. (external link)
• Bård Reiakvam Kittang; Nina Langeland; Haima Mylvaganam (2008). Distribution of emm types and subtypes among noninvasive group A, C and G streptococcal isolates in western Norway. (external link)
• Stig Harthug; Nina Langeland; Asbjørn Digranes et al. (1998). Infeksjoner forårsaket av multiresistente enterokokker i Norge. (external link)
• Christina Skår Saghaug; Astrid Leinebø Gamlem; Kirsti Brugrand Hauge et al. (2023). Genetic diversity in the metronidazole metabolism genes nitroreductases and pyruvate ferredoxin oxidoreductases in susceptible and refractory clinical samples of Giardia lamblia. (external link)
• Joel Manyahi; Sabrina John Moyo; Upendo Kibwana et al. (2022). First identification of bla NDM-5 producing Escherichia coli from neonates and a HIV infected adult in Tanzania. (external link)
• Daniel Robins; Richard N. Goodman; Ralfh Pulmones et al. (2025). Genome sequence of antibiotic-resistant Klebsiella quasipneumoniae FSFC0558: a novel sequence type (ST8212). (external link)
• Marte Wilson; Synne Garder Pedersen; Nina Langeland et al. (2026). Tailored Individual Follow-Ups Versus a One-Day Group Course in Patients With Long COVID (Post– COVID-19 Condition): Protocol for a Randomized Controlled Trial. (external link)
• Christina Skår Saghaug; Christian Klotz; Juha Pekka Kallio et al. (2019). Genetic variation in metronidazole metabolism and oxidative stress pathways in clinical giardia lamblia assemblage A and B isolates. (external link)
• Øyvind Kommedal; Katrine Lekang; Nina Langeland et al. (2011). Characterization of polybacterial clinical samples using a set of group-specific broad-range primers targeting the 16S rRNA gene followed by DNA sequencing and RipSeq analysis. (external link)
• Trung Tran; Eline Benno Vaage; Adi Mehta et al. (2022). Titers of antibodies against ancestral SARS-CoV-2 correlate with levels of neutralizing antibodies to multiple variants. (external link)
• Hans-Kittil Viermyr; Bente Halvorsen; Ellen Lund Sagen et al. (2024). High viral loads combined with inflammatory markers predict disease severity in hospitalized COVID-19 patients: Results from the NOR-Solidarity trial. (external link)
• Kurt Hanevik; Trygve Hausken; Mette Helvik Morken et al. (2007). Persisting symptoms and duodenal inflammation related to Giardia duodenalis infection. (external link)
• Lucy J. Robertson; Torunn Forberg; Lene Hermansen et al. (2008). Demographics of Giardia infections in Bergen, Norway, subsequent to a waterborne outbreak. (external link)
• Bård Reiakvam Kittang; Bjørn Blomberg; Marianne Sævik et al. (2022). SARS CoV-2 Infection among Health Care Workers from Different Health Care Facilities in Western Norway: A Prospective, Cross-Sectional Study. (external link)
• Tiina Rekand; Grethe Albrektsen; Nina Langeland et al. (2000). Risk of symptoms related to late effects of poliomyelitis. (external link)
• Åse Berg; Sam Patel; Pål Aukrust et al. (2014). Increased severity and mortality in adults co-infected with malaria and HIV in Maputo, Mozambique: a prospective cross-sectional study. (external link)
• Rebecca Jane Cox Brokstad; Karl Albert Brokstad; Florian Krammer et al. (2020). Seroconversion in household members of COVID-19 outpatients.. (external link)
• Trond Bruun; Oddvar Oppegaard; Bård Reiakvam Kittang et al. (2016). Etiology of cellulitis and clinical prediction of streptococcal disease: A prospective study. (external link)
• B Roma; S Worku; T Shiferaw et al. (2000). Antimicrobial susceptibility patterns of Shigella isolated in Awassa. (external link)
• Annette Onken; Christel Gill Haanshuus; Mohammed Khamis Miraji et al. (2022). Malaria prevalence and performance of diagnostic tests among patients hospitalized with acute undifferentiated fever in Zanzibar. (external link)
• Eric Stephen Lugada; Johathan Mermin; F. Kaharuza et al. (2004). Population-based hematologic and immunologic reference values for a healthy Ugandan population. (external link)
• Christel Gill Haanshuus; Stein Christian Mohn; Kristine Mørch et al. (2013). A novel, single-amplification PCR targeting mitochondrial genome highly sensitive and specific in diagnosing malaria among returned travellers in Bergen, Norway. (external link)
• Siri Tandberg Nygård; Nina Langeland; Hans Flaatten et al. (2014). Aetiology, antimicrobial therapy and outcome of patients with community acquired severe sepsis: A prospective study in a Norwegian university hospital. (external link)
• H Kapstad; T Rustoen; Tone Rustøen et al. (2007). Changes in pain, stiffness and physical function in patients with osteoarthritis, waiting for hip or knee joint replacement surgery. (external link)
• Kristine Mørch; Kurt Hanevik; Guri Rørtveit et al. (2009). High rate of fatigue and abdominal symptoms two years after an outbreak of giardiasis. (external link)
• Stig Harthug; Nina Langeland; Asbjørn Digranes et al. (1998). Infeksjoner forårsaket av multiresistente enterokokker i Norge. (external link)
• Sabrina John Moyo; Kurt Hanevik; Bjørn Blomberg et al. (2014). Genetic diversity of norovirus in hospitalised diarrhoeic children and asymptomatic controls in Dar es Salaam, Tanzania. (external link)
• Sabrina John Moyo; Joel Manyahi; Alasdair T. M Hubbard et al. (2021). Molecular characterisation of the first New Delhi metallo-β-lactamase 1-producing Acinetobacter baumannii from Tanzania. (external link)
• Kristine Mørch; Kurt Hanevik; Guri Rørtveit et al. (2009). High rate of fatigue and abdominal symptoms 2 years after an outbreak of giardiasis. (external link)
• Tiina Rekand; Janika Korv; Elisabeth Farbu et al. (2004). Lifestyle and late effects after poliomyelitis. A risk factor study of two populations. (external link)
• Yonas Alemu; Alemseged Abdissa; Zeleke Mekonnen et al. (2023). Prevalence and assemblage of Giardia duodenalis in a case-control study of children under 5 years from Jimma, Southwest Ethiopia. (external link)
• Siri Tandberg Knoop; Steinar Skrede; Nina Langeland et al. (2017). Epidemiology and impact on all-cause mortality of sepsis in Norwegian hospitals: A national retrospective study. (external link)
• Bjørn Blomberg; Bjørg Evjen Olsen; Sven Gudmund Hinderaker et al. (2005). Antimicrobial resistance in urinary bacterial isolates from pregnant women in rural Tanzania: Implications for public health. (external link)
• Kurt Hanevik; Einar Klæboe Kristoffersen; Steinar Sørnes et al. (2012). Immunophenotyping in post-giardiasis functional gastrointestinal disease and chronic fatigue syndrome. (external link)
• Kristine Mørch; Kurt Hanevik; Guri Rørtveit et al. (2009). Severity of Giardia infection associated with post-infectious fatigue and abdominal symptoms two years after. (external link)
• Geir Bredholt; Marianne Sævik; Hanne Søyland et al. (2024). Three doses of Sars-CoV-2 mRNA vaccine in older adults result in similar antibody responses but reduced cellular cytokine responses relative to younger adults. (external link)
• Barbara J Davids; Ching M Liu; Elaine M Hanson et al. (2019). Identification of conserved candidate vaccine antigens in the surface proteome of giardia lamblia. (external link)
• Elisabeth Berg Fjelltveit; Rebecca Jane Cox; Bård Reiakvam Kittang et al. (2021). Lower antibiotic prescription rates in hospitalized COVID-19 patients than influenza patients, a prospective study. (external link)
• Arvid E Nilsen; Mabula Joseph Kasubi; Stein Christian Mohn et al. (2007). Herpes simplex virus infection and genital ulcer disease among patients with sexually transmitted infections in Dar es Salaam, Tanzania. (external link)
• Sverre Litleskare; Guri Rørtveit; Geir Egil Eide et al. (2018). Prevalence of irritable bowel syndrome and chronic fatigue 10 years after giardia infection. (external link)
• Magdalena Ydreborg; Vera Lisovskaja; Martin Lagging et al. (2014). A novel fibrosis index comprising a non-cholesterol sterol accurately predicts HCV-related liver cirrhosis. (external link)
• Karolina Rembeck; Åsa Alsiö; Peer Brehm Christensen et al. (2012). Impact of IL28B-related single nucleotide polymorphisms on liver histopathology in chronic hepatitis C genotype 2 and 3. (external link)
• Hamada S Badr; Josh M Colston; Nhat-Lan H Nguyen et al. (2023). Spatiotemporal variation in risk of Shigella infection in childhood: a global risk mapping and prediction model using individual participant data. (external link)
• Kurt Hanevik; Einar Klæboe Kristoffersen; Staffan Svard et al. (2011). Human cellular immune response against giardia lamblia 5 years after acute giardiasis. (external link)
• Sverre Litleskare; Knut-Arne Wensaas; Geir Egil Eide et al. (2015). Perceived food intolerance and irritable bowel syndrome in a population 3 years after a giardiasis-outbreak: a historical cohort study. (external link)
• Claus Andreas Klingenberg; Museveni Ntwalibalilimba Justine; Sabrina John Moyo et al. (2025). Home administration of a multistrain probiotic once per day for 4 weeks to newborn infants in Tanzania (ProRIDE): a double-blind, placebo-controlled randomised trial. (external link)
• Åsa Alsiö; Anna-Maria Jannesson; Nina Langeland et al. (2012). Early quantification of HCV core antigen may help to determine the duration of therapy for chronic genotype 2 or 3 HCV infection. (external link)
• Maria Lindh; Anders Eilard; Martti Färkkilä et al. (2011). Hepatitis C treatment response kinetics and impact of baseline predictors. (external link)
• Bård Reiakvam Kittang; Trond Bruun; Nina Langeland et al. (2011). Invasive group A, C and G streptococcal disease in western Norway: virulence gene profiles, clinical features and outcomes. (external link)
• Kari Otterdal; Åse Berg; Annika Michelsen et al. (2020). Plasma levels of interleukin 27 in falciparum malaria is increased independently of co-infection with HIV: Potential immune-regulatory role during malaria. (external link)
• Upendo O. Kibwana; Joel Manyahi; Sabrina John Moyo et al. (2024). Antimicrobial resistance profile of Enterococcus species and molecular characterization of Vancomycin resistant Enterococcus faecium from the fecal samples of newly diagnosed adult HIV patients in Dar es Salaam, Tanzania. (external link)
• Kristin Greve-Isdahl Mohn; Geir Bredholt; Fan Zhou et al. (2022). Durable T-cellular and humoral responses in SARS-CoV-2 hospitalized and community patients. (external link)
• Lucy J Robertson; Torunn Forberg; Lene Hermansen et al. (2008). Demographics of Giardia infections in Bergen, Norway, subsequent to a waterborne outbreak. (external link)
• Aase Berg; Sam Patel; Nina Langeland et al. (2008). Falciparum malaria and HIV-1 in hospitalized adults in Maputo, Mozambique: does HIV-infection obscure the malaria diagnosis?. (external link)
• Gunnhild Sellevoll Hunskår; Nina Langeland; Knut-Arne Wensaas et al. (2012). The impact of atopic disease on the risk of post-infectious fatigue and irritable bowel syndrome 3 years after Giardia infection. A historic cohort study. (external link)
• Øystein Haarklau Johansen; Alemseged Abdissa; Mike Zangenberg et al. (2020). Performance and operational feasibility of two diagnostic tests for cryptosporidiosis in children (CRYPTO-POC): a clinical, prospective, diagnostic accuracy study. (external link)
• Kari Otterdal; Åse Berg; Annika Michelsen et al. (2018). Soluble markers of neutrophil, T-cell and monocyte activation are associated with disease severity and parasitemia in falciparum malaria. (external link)
• Tiina Rekand; Rune Male; Andreas Myking et al. (2003). Detection of viral sequences in archival spinal cords from fatal cases of poliomyelitis in 1951-1952. (external link)
• Christina Skår Saghaug; Christian Klotz; Juha Pekka Kallio et al. (2020). Genetic diversity of the flavohemoprotein gene of giardia lamblia: Evidence for high allelic heterozygosity and copy number variation. (external link)

Letter to the editor

• Trond Bruun; Oddvar Oppegaard; Bård Reiakvam Kittang et al. (2016). Etiology of cellulitis and the validity of new and old methods. (external link)
• Martin Lagging; Nina Langeland; Court Pedersen et al. (2008). Weight-adjusted dosing of ribavirin and importance of hepatitis C virus RNA below 1000 IU/mL by day 7 in short-term peginterferon therapy for chronic genotype 2/3 hepatitis C virus infection. (external link)
• Lucy Robertson; Kristoffer Tysnes; Kurt Hanevik et al. (2015). Hund som Giardia-kilde i Bergen i 2004 - barking up the wrong tree?. (external link)
• Steinar Skrede; Siri Nygård; Nina Langeland et al. (2013). Aminoglycosides can reduce the risk. (external link)
• Kristine Mørch; Øystein Strand; Oona Dunlop et al. (2008). Severe malaria and artesunate treatment, Norway. (external link)
• Martin Lagging; Åsa Alsiö; Nina Langeland et al. (2011). Early determination of Hepatitis C virus RNA may help to decide the duration of therapy for chronic Hepatitis C virus genotype 2/3 infection. (external link)
• Kurt Hanevik; Vernesa Dizdar; Nina Langeland et al. (2011). Tolerability and effect of mesalazine in postinfectious irritable bowel syndrome. (external link)

Conference lecture

• Øystein Haarklau Johansen; Alemseged Abdissa; Zeleke Mekonnen et al. (2017). Low-cost point-of-care diagnosis of Cryptosporidium infection in resource limited settings – the CRYPTO-POC study.. (external link)
• Amit Bansal; Mai Chi Trieu; Anders Madsen et al. (2020). Antibody responses to SARS-CoV-2 virus in Norwegian health-care workers: an observational prospective cohort study. (external link)
• Sunniva Todnem Sakkestad; Kristine Lillebø; Hans Steinsland et al. (2017). Developing a controlled human infection model for testing heat-stable toxoid-based vaccine candidates for enterotoxigenic Escherichia coli diarrhea. (external link)
• Sunniva Todnem Sakkestad; Hans Steinsland; Steinar Skrede et al. (2018). ETEC strain TW10722 may be suitable for use in vaccine challenge studies for testing heat-stable toxoid based vaccine candidates. (external link)
• Sverre Litleskare; Guri Rørtveit; Geir Egil Eide et al. (2016). Irritable bowel syndrome and chronic fatigue ten years after giardia infection: a controlled prospective cohort study.. (external link)
• Sverre Litleskare; Guri Rørtveit; Geir Egil Eide et al. (2017). Irritable bowel syndrome, chronic fatigue and quality of life ten years after a Giardia lamblia epidemic in Norway 2004. (external link)
• Kari Indrekvam; Johan Dahlstrøm; Birgitte Espehaug et al. (2002). Lang tids overlevelsesanalyse av sementerte og usementerte totalproteser i kneleddet. En norsk multisenterstudie. (external link)
• Øystein Haarklau Johansen; Alemseged Abdissa; Mike Zangenberg et al. (2019). Auramine-phenol staining and light-emitting diode fluorescence microscopy and a rapid dipstick test for detection of Cryptosporidium infection: a diagnostic accuracy study in a university hospital and a rural health centre in Ethiopia.. (external link)
• Amit Bansal; Mai Chi Trieu; Anders Madsen et al. (2020). Low infection and seroconversion rates in frontline healthcare workers during the peak of the Coronavirus disease 2019 pandemic in Bergen, Norway. (external link)
• Amit Bansal; Mai Chi Trieu; Anders Madsen et al. (2020). SARS-COV-2-Specific neutralising antibody responses in Norwegian healthcare workers after the first wave of COVID-19 pandemic: a prospective cohort study. (external link)
• Øystein Haarklau Johansen; Alemseged Abdissa; Mike Zangenberg et al. (2019). Prolonged and persistent diarrhoea in children: a case-control study in Ethiopia. (external link)
• Stig Harthug; Nina Langeland (1998). Outbreak of multiresistant enterococcus faecium in a Norwegian university hospital - riskfactors for infection. (external link)
• S.C. Mohn; Stig Harthug; Nina Langeland (1998). Outbreak of multiresistant enterococcus faecium in a Norwegian university hospital - riskfactors for faecal colonization. (external link)
• Christina Skår Saghaug; Steinar Sørnes; Dimitra Peirasmaki et al. (2014). Flow cytometric method for characterization of human T cell responses against Giardia lamblia. (external link)
• Fan Zhou; Juha Vahokoski; Florian Krammer et al. (2023). Age related differences in kinetics and magnitude of SARS-CoV-2 and endemic human coronavirus reactive antibody responses after vaccination and infection. (external link)
• Nina Langeland; Lucy J Robertson (2009). Giardiasis in non-endemic areas: molecular characterization as a predictor for clinical picture, treatment outcome, and persistence. (external link)

Conference poster

• Sverre Litleskare; Guri Rørtveit; Geir Egil Eide et al. (2016). Irritable bowel syndrome associated with giardia lamblia infection ten years after acute illness: a controlled prospective cohort study.. (external link)
• Marit Gjerde Tellevik; johanna u ericson Sollid; Bjørn Blomberg et al. (2005). Prevalence and characterization of extended spectrum beta-lactamase (ESBL) producing isolates from children with bacteraemia in Tanzania. (external link)
• Alfred Halstensen; Pål Voltersvik; Nina Langeland et al. (2000). Ofloxacin for non-typhoid salmonella enteritis. (external link)
• Fan Zhou; Juha Vahokoski; Nina Langeland et al. (2022). Kinetics of seasonal and pandemic human coronavirus reactive antibodies after repeated vaccinations in adults and the elderly. (external link)
• Helga Høgåsen; Lucy J Robertson; Vidar Lund et al. (2009). Quantitative risk assessment for cryptosporidiosis in Norway due to pre-treatment contamination of drinking water. (external link)
• MJ Kasubi; Arvid E Nilsen; T Bergström et al. (2005). Antibodies against HSV-1 and HSV-2 in children and young persons attending an outpatient clinic in Tanzania. (external link)
• Arvid E Nilsen; D Mwajaguke; H Marsden et al. (2005). Genital ulcer disease and herpes simplex virus infection in Tanzanian STD patients. (external link)
• Øystein Wendelbo; Roland Jureen; Asbjørn Digranes et al. (2000). Outbreak of infections caused by high-level gentamicin-resistant (mic > 512 mg/l) Enterococcus faecalis (HLGRE) in Haukeland university hospital, Norway. (external link)

Academic literature review

• Alessandro Visentin; Alessandra Nazeri; José Luis Peñalvo et al. (2025). Lessons from the European mpox outbreak: strengthening cohort research for future pandemic preparedness. (external link)
• Brita Askeland Winje; Turid Mannsåker; Nina Langeland et al. (2008). Medikamentresistens ved tuberkulose. (external link)
• Lucy J Robertson; Kurt Hanevik; Angel A. Escobedo et al. (2010). Giardiasis - why do the symptoms sometimes never stop?. (external link)
• Birgitta Åsjø; Nina Langeland (2008). Medikamentell resistens vid HIV-infektion. (external link)

Conference abstract

• Trygve Hausken; Vernesa Dizdar; Kurt Hanevik et al. (2012). Duodenal mucosal lymphocyte subgroups in patients with persisting abdominal symptoms after Giardia lamblia infection. (external link)
• Martin Lagging; Carsten Pedersen; Mads Rauning Buhl et al. (2007). Comparison of peginterferon alpha-2a and ribavirin for 12 or 24 weeks in patients with HCV genotype 2/3: The nordynamic trial. (external link)
• Karolina Rembeck; Gunnar P. Norkrans; Olav Dalgard et al. (2011). The efficiency of re-treatment with peg-interferon and ribavirin in patients with chronic hepatitis C infection genotype 2 or 3 with prior relapse. (external link)
• Karolina Rembeck; Asa Alsio; Peer B. Christensen et al. (2011). Impact of obesity on the bioavailability of peginterferon-alpha 2A and ribavirin and treatment outcome for chronic hepatitis C genotype 2 or 3. (external link)
• Karolina Rembeck; Magnus Lindh; Court Pedersen et al. (2012). Impact of Inosine Triphosphatase (ITPA) Gene Variants on Anemia, Ribavirin Concentrations, and Outcome During Therapy for HCV Genotype 2/3. (external link)
• Martin Lagging; Court Pedersen; Mads Rauning Buhl et al. (2007). Peginterferon alfa-2a and ribavirin for 12 or 24 weeks in patients with HCV genotype 2/3: The nordynamic trial. (external link)
• Sverre Litleskare; Guri Rørtveit; Geir Egil Eide et al. (2016). Irritable bowel syndrome ten years after acute Giardia lamblia infection: A controlled prospective cohort study. (external link)
• Peter Derek Christian Leutscher; Mads Rauning Buhl; Martin Lagging et al. (2009). EVALUATION OF THE ROUTINE MEDICAL INTERVIEW TO IDENTIFY HEPATITIS C PATIENTS DEVELOPING MAJOR DEPRESSION DURING PEGINTERFERON ALFA-2A PLUS RIBAVIRIN TREATMENT USING THE MAJOR DEPRESSION INVENTORY. (external link)
• Asa Alsio; Nina Langeland; Court Pedersen et al. (2010). IMPORTANCE OF HCV CORE ANTIGEN BELOW 0.2 PG/ML DAY 3 IN SHORT-TERM PEG-INTERFERON THERAPY FOR CHRONIC GENOTYPE2/3 INFECTION. (external link)
• Johan Westin; Martin Lagging; Carsten Pedersen et al. (2008). Twelve weeks of treatment is insufficient for HCV genotype 2 and 3 infected patients with steatosis. (external link)

Doctoral thesis (PhD)

• Siri Tandberg Knoop; Steinar Skrede; Hans Flaatten et al. (2018). The epidemiology and characteristics of sepsis in Norwegian hospitals. (external link)
• Eric Stephen Lugada; Nina Langeland (2004). Affordable alternatives for managing HIV infected patients in a resource-poor country, Uganda. (external link)
• Bjørn Blomberg; Nina Langeland; Samwel Maselle et al. (2007). Antimicrobial resistance in bacterial infections in urban and rural Tanzania. (external link)
• Stein Christian Mohn; Nina Langeland; Stig Harthug (2005). Ampicillin resistance in Enterococcus faecium. (external link)
• Åse Berg; Nina Langeland (2015). Falciparum malaria and HIV-1 in adult in-patients in Maputo, Mozambique. Clinical presentation, cytokine-pattern and complement activation. (external link)
• Roland Jureen; Nina Langeland (2004). Ampicillin-and high-level gentamicin-resistant enterococci in hospitalised patients in Norway. (external link)
• Christel Gill Haanshuus; Stein Christian Mohn; Kristine Mørch et al. (2019). PCR based Malaria diagnostics : – Method development and application. (external link)
• Nina Langeland (1989). Virus-host cell interaction in herpes simplex virus infection : characterization of ligand-receptor interaction and cellular responses. (external link)
• Arvid E Nilsen; Lars Haarr; Nina Langeland (2007). Genital herpes simplex virus infection : clinical and epidemiological aspects. (external link)

Master’s thesis

• Marit Gjerde Tellevik; Nina Langeland; Rein Aasland (2005). Extended Spectrum Beta-Lactamase (ESBL) producing Klebsiella pneumoniae isolates recovered from blood cultures from children in Tanzania; Enzyme types and vectors for horizontal transfer of antimicrobial resistance. (external link)
• Leif Atle Dahle; Lars Haarr; Nina Langeland et al. (2005). Produksjon av glycoprotein C fra herpes simpleks virus type 1 og testing av den biologiske aktiviteten. (external link)
• Christina Skår Saghaug; Nina Langeland; Kurt Hanevik (2014). Developing a flow cytometric method to characterize human T cell responses against the enteric protozoan parasite Giardia lamblia. (external link)

Journal corrigendum

• Trung Tran; Eline Benno Vaage; Adi Mehta et al. (2023). Author Correction: Titers of antibodies against ancestral SARS-CoV-2 correlate with levels of neutralizing antibodies to multiple variants (npj Vaccines, (2022), 7, 1, (174), 10.1038/s41541-022-00586-7). (external link)
• Knut Erik Emberland; Knut-Arne Wensaas; Sverre Litleskare et al. (2022). Correction to: Clinical features of gastroenteritis during a large waterborne Campylobacter outbreak in Askøy, Norway (Infection, (2022), 50, 2, (343-354), 10.1007/s15010-021-01652-3). (external link)

Media feature article

• Nina Langeland; Magne Olav Sydnes (2024). Et spøkelse som henger over oss. (external link)
• Nina Langeland; Magne Olav Sydnes (2024). Kjemikere jobber iherdig med å ta knekken på antibiotika­­resistensen. (external link)

Research report

• Lucy Robertson; Helga Rachel Høgåsen; Truls Krogh et al. (2009). Risikovurdering av parasitter i norsk drikkevann. Uttalelse fra Faggruppe for hygiene og smittestoffer i Vitenskapskomiteen for mattrygghet. (external link)

See a complete overview of publications in NVA.