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. 

Feature article

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

Academic article

• Kibwana, Upendo O.; Manyahi, Joel; Moyo, Sabrina John 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)
• Zhou, Fan; Vahokoski, Juha; Øyen, Siri et al. (2024). Impact of ageing on homologous and human-coronavirus-reactive antibodies after SARS-CoV-2 vaccination or infection. (external link)
• Bredholt, Geir; Sævik, Marianne; Søyland, Hanne 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)
• Torgauten, Hilde Marie; Onyango, Therese Bredholt; Ljostveit, Sonja et al. (2024). Hospitalisations and humoral COVID-19 vaccine response in vaccinated rituximab-treated multiple sclerosis patients. (external link)
• Onken, Annette; Moyo, Sabrina John; Miraji, Mohammed Khamis et al. (2024). Predominance of multidrug-resistant Salmonella Typhi genotype 4.3.1 with low-level ciprofloxacin resistance in Zanzibar. (external link)
• Iversen, Arild; Blomberg, Bjørn; Haug, Kjell et al. (2024). Symptom trajectories of post-COVID sequelae in patients with acute Delta or Omicron infection in Bergen, Norway. (external link)
• Tesfaw, Getnet; Siraj, Dawd S.; Abdissa, Alemseged et al. (2024). Gut microbiota patterns associated with duration of diarrhea in children under five years of age in Ethiopia. (external link)
• Viermyr, Hans-Kittil; Halvorsen, Bente; Sagen, Ellen Lund 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)
• Alemu, Yonas; Abdissa, Alemseged; Mekonnen, Zeleke 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)
• Bansal, Amit; Trieu, Mai Chi; Mohn, Kristin Greve-Isdahl et al. (2023). Risk assessment and antibody responses to SARS-CoV-2 in healthcare workers. (external link)
• Klotz, Christian; Schmid, Marc William; Winter, Katja 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)
• Hansen, Lena; Brokstad, Karl Albert; Bansal, Amit et al. (2023). Durable immune responses after BNT162b2 vaccination in home-dwelling old adults. (external link)
• Onyango, Therese Bredholt; Zhou, Fan; Bredholt, Geir et al. (2023). SARS-CoV-2 specific immune responses in overweight and obese COVID-19 patients. (external link)
• Wolff, Anette Susanne Bøe; Hansen, Lena; Grytaas, Marianne Aardal et al. (2023). Vaccination prevents severe COVID-19 outcome in patients with neutralizing type 1 interferon autoantibodies. (external link)
• Ertesvåg, Nina Urke; Iversen, Arild; Blomberg, Bjørn et al. (2023). Post COVID-19 condition after delta infection and omicron reinfection in children and adolescents. (external link)
• Badr, Hamada S; Colston, Josh M; Nguyen, Nhat-Lan H 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)
• Kibwana, Upendo O.; Manyahi, Joel; Sandnes, Helene Heitmann et al. (2023). Fluoroquinolone resistance among fecal extended spectrum βeta lactamases positive Enterobacterales isolates from children in Dar es Salaam, Tanzania. (external link)
• Manyahi, Joel; Moyo, Sabrina John; Langeland, Nina 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)
• Saghaug, Christina Skår; Gamlem, Astrid Leinebø; Hauge, Kirsti Brugrand 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)
• Mørch, Kristine; Manoharan, Anand; Chandy, Sara 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)
• Ertesvåg, Nina Urke; Xiao, Julie; Zhou, Fan et al. (2022). A rapid antibody screening haemagglutination test for predicting immunity to SARS-CoV-2 variants of concern. (external link)
• Fjelltveit, Elisabeth Berg; Blomberg, Bjørn; Kuwelker, Kanika 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)
• Kittang, Bård Reiakvam; Blomberg, Bjørn; Sævik, Marianne 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)
• Johansen, Øystein Haarklau; Abdissa, Alemseged; Zangenberg, Mike et al. (2022). A comparison of risk factors for cryptosporidiosis and non-cryptosporidiosis diarrhoea: A case-case-control study in Ethiopian children. (external link)
• Kibwana, Upendo O.; Manyahi, Joel; Sandnes, Helene Heitmann 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)
• Syre, Heidi; Obreque, Marius Eduardo Brå; Dalen, Ingvild 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)
• Manyahi, Joel; Moyo, Sabrina John; Kibwana, Upendo et al. (2022). First identification of bla NDM-5 producing Escherichia coli from neonates and a HIV infected adult in Tanzania. (external link)
• Johansen, Øystein Haarklau; Abdissa, Alemseged; Bjørang, Ola et al. (2022). Oocyst Shedding Dynamics in Children with Cryptosporidiosis: a Prospective Clinical Case Series in Ethiopia. (external link)
• Mohn, Kristin Greve-Isdahl; Bredholt, Geir; Zhou, Fan et al. (2022). Durable T-cellular and humoral responses in SARS-CoV-2 hospitalized and community patients. (external link)
• Tran, Trung; Vaage, Eline Benno; Mehta, Adi et al. (2022). Titers of antibodies against ancestral SARS-CoV-2 correlate with levels of neutralizing antibodies to multiple variants. (external link)
• Onken, Annette; Haanshuus, Christel Gill; Miraji, Mohammed Khamis et al. (2022). Malaria prevalence and performance of diagnostic tests among patients hospitalized with acute undifferentiated fever in Zanzibar. (external link)
• Hanevik, Kurt; Saghaug, Christina Skår; Aaland, Maren 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)
• Ekanger, Camilla Tvedt; Zhou, Fan; Bohan, Dana 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)
• Kuwelker, Kanika; Zhou, Fan; Blomberg, Bjørn et al. (2021). Attack rates amongst household members of outpatients with confirmed COVID-19 in Bergen, Norway: A case-ascertained study. (external link)
• Blomberg, Bjørn; Mohn, Kristin Greve-Isdahl; Brokstad, Karl Albert et al. (2021). Long COVID in a prospective cohort of home-isolated patients. (external link)
• Muller, Karl Erik; Blomberg, Bjørn; Tellevik, Marit Gjerde et al. (2021). Leishmaniasis i Norge. (external link)
• Hunskår, Gunnhild Sellevoll; Rørtveit, Guri; Litleskare, Sverre et al. (2021). Prevalence of fibromyalgia 10 years after infection with Giardia lamblia: A controlled prospective cohort study. (external link)
• Otterdal, Kari; Berg, Åse; Michelsen, Annika Elisabet et al. (2021). IL-18 and IL-18 binding protein are related to disease severity and parasitemia during falciparum malaria. (external link)
• Kuwelker, Kanika; Langeland, Nina; Löhr, Iren Høyland 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)
• Manyahi, Joel; Moyo, Sabrina John; Aboud, Said 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)
• Waldenström, Jesper; Hellstrand, Kristoffer; Westin, Johan 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)
• Emberland, Knut Erik; Wensaas, Knut-Arne; Litleskare, Sverre et al. (2021). Clinical features of gastroenteritis during a large waterborne Campylobacter outbreak in Askøy, Norway. (external link)
• Mortensen, Nicolay; Jonasson, Solveig Aalstad; Thulin, Ingrid Viola Lavesson et al. (2021). Characteristics of hospitalized patients during a large waterborne outbreak of Campylobacter jejuni in Norway. (external link)
• Fjelltveit, Elisabeth Berg; Cox, Rebecca Jane; Kittang, Bård Reiakvam et al. (2021). Lower antibiotic prescription rates in hospitalized COVID-19 patients than influenza patients, a prospective study. (external link)
• Moyo, Sabrina John; Manyahi, Joel; Hubbard, Alasdair T. M et al. (2021). Molecular characterisation of the first New Delhi metallo-β-lactamase 1-producing Acinetobacter baumannii from Tanzania. (external link)
• Myrstad, Marius; Kuwelker, Kanika; Haakonsen, Sigurd 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)
• Trieu, Mai Chi; Bansal, Amit; Madsen, Anders 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)
• Otterdal, Kari; Berg, Åse; Michelsen, Annika 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)
• Berg, Åse; Patel, Sam; Tellevik, Marit Gjerde 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)
• Johansen, Øystein Haarklau; Abdissa, Alemseged; Zangenberg, Mike 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)
• Pedersen, Torunn Annie; Tellevik, Marit Gjerde; Kommedal, Øyvind 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)
• Martínez, Cristina; Lasitschka, Felix; Thöni, Cornelia et al. (2020). Comparative expression profiling in the intestine of patients with Giardia-induced postinfectious functional gastrointestinal disorders. (external link)
• Manyahi, Joel; Moyo, Sabrina John; Aboud, Said 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)
• Moyo, Sabrina John; Manyahi, Joel; Blomberg, Bjørn et al. (2020). Bacteraemia, malaria, and case fatality among children hospitalized with fever in Dar es Salaam, Tanzania. (external link)
• Waldenström, Jesper; Nyström, Kristina; Nilsson, Staffan 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)
• Saghaug, Christina Skår; Klotz, Christian; Kallio, Juha Pekka et al. (2020). Genetic diversity of the flavohemoprotein gene of giardia lamblia: Evidence for high allelic heterozygosity and copy number variation. (external link)
• Manyahi, Joel; Moyo, Sabrina John; Tellevik, Marit Gjerde 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)
• Fjelltveit, Elisabeth Berg; Brokstad, Rebecca Jane Cox; Østensjø, Jørgen et al. (2020). Point-of-care influenza testing impacts clinical decision, patient flow and length of stay in hospitalized adults. (external link)
• Litleskare, Sverre; Rørtveit, Guri; Eide, Geir Egil et al. (2019). Quality of life and its association with irritable bowel syndrome and fatigue ten years after giardiasis. (external link)
• Saghaug, Christina Skår; Klotz, Christian; Kallio, Juha Pekka et al. (2019). Genetic variation in metronidazole metabolism and oxidative stress pathways in clinical giardia lamblia assemblage A and B isolates. (external link)
• Haanshuus, Christel Gill; Mørch, Kristine; Blomberg, Bjørn et al. (2019). Assessment of malaria real-time PCR methods and application with focus on lowlevel parasitaemia. (external link)
• Zangenberg, Mike; JOHANSEN, ØYSTEIN HAARKLAU; Abdissa, Alemseged et al. (2019). Prolonged and persistent diarrhoea is not restricted to children with acute malnutrition: an observational study in Ethiopia. (external link)
• Sakkestad, Sunniva Todnem; Steinsland, Hans; Skrede, Steinar 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)
• Davids, Barbara J; Liu, Ching M; Hanson, Elaine M et al. (2019). Identification of conserved candidate vaccine antigens in the surface proteome of giardia lamblia. (external link)
• Dizdar, Vernesa; Hausken, Trygve; Lærum, Ole Didrik et al. (2018). Prolonged duodenal mucosal lymphocyte alterations in patients with and without postinfectious functional gastrointestinal disorders after Giardia infection. (external link)
• Otterdal, Kari; Berg, Åse; Michelsen, Annika et al. (2018). Soluble markers of neutrophil, T-cell and monocyte activation are associated with disease severity and parasitemia in falciparum malaria. (external link)
• Hanevik, Kurt; Wik, Elisabeth; Langeland, Nina et al. (2018). Transient elevation of anti-transglutaminase and anti-endomysium antibodies in Giardia infection. (external link)
• Hjøllo, Torunn; Bratland, Eirik; Steinsland, Hans et al. (2018). Longitudinal cohort study of serum antibody responses towards Giardia lamblia variant-specific surface proteins in a non-endemic area. (external link)
• Litleskare, Sverre; Rørtveit, Guri; Eide, Geir Egil et al. (2018). Prevalence of irritable bowel syndrome and chronic fatigue 10 years after giardia infection. (external link)
• Knoop, Siri Tandberg; Skrede, Steinar; Langeland, Nina et al. (2017). Epidemiology and impact on all-cause mortality of sepsis in Norwegian hospitals: A national retrospective study. (external link)
• Moyo, Sabrina John; Kommedal, Øyvind; Blomberg, Bjørn 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)
• Radunovic, Matej; Klotz, Christian; Saghaug, Christina Skår et al. (2017). Genetic variation in potential Giardia vaccine candidates cyst wall protein 2 and α1-giardin. (external link)
• Manyahi, Joel; Moyo, Sabrina John; Tellevik, Marit Gjerde 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)
• Manyahi, Joel; Tellevik, Marit Gjerde; Ndugulile, Faustine Engelbert et al. (2017). Molecular Characterization of Cotrimoxazole Resistance Genes and Their Associated Integrons in Clinical Isolates of Gram-Negative Bacteria from Tanzania. (external link)
• Nygård, Siri Tandberg; Skrede, Steinar; Langeland, Nina et al. (2017). An observational study of community-acquired severe sepsis comparing intensive care and non-intensive care patients. (external link)
• Hanevik, Kurt; Kristoffersen, Einar Klæboe; Mørch, Kristine et al. (2017). Giardia-specific cellular immune responses in post-giardiasis chronic fatigue syndrome. (external link)
• Mørch, Kristine; Manoharan, Anand; Chandy, Sara et al. (2017). Acute undifferentiated fever in India: A multicentre study of aetiology and diagnostic accuracy. (external link)
• Aase, Audun; Sommerfelt, Halvor; Petersen, Lizette Balle et al. (2016). Salivary IgA from the sublingual compartment as a novel noninvasive proxy for intestinal immune induction. (external link)
• Tellevik, Marit Gjerde; Blomberg, Bjørn; Kommedal, Øyvind et al. (2016). High prevalence of faecal carriage of esbl-producing enterobacteriaceae among children in Dar es Salaam, Tanzania. (external link)
• Bruun, Trond; Oppegaard, Oddvar; Hufthammer, Karl Ove et al. (2016). Early Response in Cellulitis: A Prospective Study of Dynamics and Predictors. (external link)
• Bruun, Trond; Oppegaard, Oddvar; Kittang, Bård Reiakvam et al. (2016). Etiology of cellulitis and clinical prediction of streptococcal disease: A prospective study. (external link)
• Haanshuus, Christel Gill; Chandy, Sara; Manoharan, Anand et al. (2016). A high malaria prevalence identified by PCR among patients with acute undifferentiated fever in India. (external link)
• Hunskår, Gunnhild Sellevoll; Bjorvatn, Bjørn; Wensaas, Knut-Arne et al. (2016). Excessive daytime sleepiness, sleep need and insomnia 3 years after Giardia infection: A cohort study. (external link)
• Waldenström, Jesper; Färkkilä, Martti A.; Rembeck, Karolina et al. (2016). Short interferon and ribavirin treatment for HCV genotype 2 or 3 infection: NORDynamIC trial and real-life experience. (external link)
• Wensaas, Knut-Arne; Hanevik, Kurt; Hausken, Trygve 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)
• Saghaug, Christina Skår; Sørnes, Steinar; Peirasmaki, Dimitra et al. (2016). Human Memory CD4+ T Cell Immune Responses against Giardia lamblia. (external link)
• Persson, Robert; Wensaas, Knut-Arne; Hanevik, Kurt 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)
• Litleskare, Sverre; Wensaas, Knut-Arne; Eide, Geir Egil 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)
• Tellevik, Marit Gjerde; Moyo, Sabrina John; Blomberg, Bjørn 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)
• Fredrick, Francis F.; Ruggajo, Paschal J.; Basu, Gopal et al. (2015). Global collaboration bears fruit: Tanzania report. (external link)
• Berg, Åse; Otterdal, Kari; Patel, Sam et al. (2015). Complement activation correlates with disease severity and contributes to cytokine responses in plasmodium falciparum malaria. (external link)
• Hanevik, Kurt; Bakken, Rasmus; Brattbakk, Hans-Richard et al. (2015). Whole genome sequencing of clinical isolates of Giardia lamblia. (external link)
• Aamodt, Håvard; Mohn, Stein Christian; Maselle, Samuel Y 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)
• Berg, Åse; Patel, Sam; Gonca, Miguel 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)
• Oppegaard, Oddvar; Mylvaganam, Haima; Skrede, Steinar 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)
• Moyo, Sabrina John; Aboud, Said; Blomberg, Bjørn et al. (2014). High nasal carriage of methicillin-resistant staphylococcus aureus among healthy tanzanian under-5 children. (external link)
• Ydreborg, Magdalena; Lisovskaja, Vera; Lagging, Martin et al. (2014). A novel fibrosis index comprising a non-cholesterol sterol accurately predicts HCV-related liver cirrhosis. (external link)
• Berg, Åse; Patel, Sam; Aukrust, Pål 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)
• Moyo, Sabrina John; Blomberg, Bjørn; Hanevik, Kurt et al. (2014). Genetic diversity of circulating rotavirus strains in Tanzania prior to the introduction of vaccination. (external link)
• Moyo, Sabrina John; Hanevik, Kurt; Blomberg, Bjørn et al. (2014). Genetic diversity of norovirus in hospitalised diarrhoeic children and asymptomatic controls in Dar es Salaam, Tanzania. (external link)
• Nygård, Siri Tandberg; Langeland, Nina; Flaatten, Hans 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)
• Rembeck, Karolina; Waldenström, Jesper; Hellstrand, Kristoffer 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)
• Skrede, Steinar; Steinsland, Hans; Sommerfelt, Halvor et al. (2014). Experimental infection of healthy volunteers with enterotoxigenic Escherichia coli wild-type strain TW10598 in a hospital ward. (external link)
• Moyo, Sabrina John; Haldorsen, Bjørg; Aboud, Said 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)
• Moyo, Sabrina John; Hanevik, Kurt; Blomberg, Bjørn et al. (2014). Prevalence and molecular characterisation of human adenovirus in diarrhoeic children in Tanzania; a case control study. (external link)
• Hanevik, Kurt; Wensaas, Knut-Arne; Rørtveit, Guri et al. (2014). Irritable bowel syndrome and chronic fatigue 6 years after Giardia infection: A controlled prospective cohort study. (external link)
• Strøm, Gro Elizabeth Ann; Tellevik, Marit Gjerde; Hanevik, Kurt 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)
• Rørtveit, Sverre; Skutlaberg, Dag Harald; Langeland, Nina 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)
• Haarr, Lars; Nilsen, Arvid E; Knappskog, Per 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)
• Strøm, Gro Elizabeth Ann; Moyo, Sabrina John; Fataki, Maulidi et al. (2014). PCR targeting Plasmodium mitochondrial genome of DNA extracted from dried blood on filter paper compared to whole blood. (external link)
• Strøm, Gro Elizabeth Ann; Tellevik, Marit Gjerde; Fataki, Maulidi et al. (2013). No asymptomatic malaria parasitaemia found among 108 young children at one health facility in Dar es Salaam, Tanzania. (external link)
• Strøm, Gro Elizabeth Ann; Haanshuus, Christel Gill; Fataki, Maulidi et al. (2013). Challenges in diagnosing paediatric malaria in Dar es Salaam, Tanzania. (external link)
• Lagging, Martin; Rembeck, Karolina; Buhl, Mads Rauning 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)
• Abrahamsen, Siri Kratter; Haugen, Cathrine Ingebjørg Nødtvedt; Rupali, Priscilla 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)
• Haanshuus, Christel Gill; Mohn, Stein Christian; Mørch, Kristine 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)
• Oppegaard, Oddvar; Skodvin, Brita; Halse, Anne-Kristine et al. (2013). CD64 as a potential biomarker in septic arthritis. (external link)
• Bruun, Trond; Kittang, Bård Reiakvam; Hoog, Bram Johan de 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)
• Mørch, Kristine; Hanevik, Kurt; Rivenes, Ann Christin et al. (2013). Chronic fatigue syndrome 5 years after giardiasis: differential diagnoses, characteristics and natural course. (external link)
• Kommedal, Øyvind; Simmon, Keith; Karaca, Dilek et al. (2012). Dual-priming oligonucleotides for broad-range amplification of the bacterial 16S rRNA gene directly from human clinical specimens. (external link)
• Wensaas, Knut-Arne; Langeland, Nina; Hanevik, Kurt et al. (2012). Irritable bowel syndrome and chronic fatigue 3 years after acute giardiasis: historic cohort study. (external link)
• Moyo, Sabrina John; Steinbakk, Martin; Aboud, Said 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)
• Rembeck, Karolina; Alsiö, Åsa; Christensen, Peer Brehm et al. (2012). Impact of IL28B-related single nucleotide polymorphisms on liver histopathology in chronic hepatitis C genotype 2 and 3. (external link)
• Alsiö, Åsa; Rembeck, Karolina; Askarieh, Galia 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)
• Hanevik, Kurt; Kristoffersen, Einar Klæboe; Sørnes, Steinar et al. (2012). Immunophenotyping in post-giardiasis functional gastrointestinal disease and chronic fatigue syndrome. (external link)
• Rembeck, Karolina; Maglio, Cristina; Lagging, Martin 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)
• Hunskår, Gunnhild Sellevoll; Langeland, Nina; Wensaas, Knut-Arne 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)
• Alsiö, Åsa; Jannesson, Anna-Maria; Langeland, Nina 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)
• Kittang, Bård Reiakvam; Skrede, Steinar; Langeland, Nina 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)
• Kittang, Bård Reiakvam; Bruun, Trond; Langeland, Nina et al. (2011). Invasive group A, C and G streptococcal disease in western Norway: virulence gene profiles, clinical features and outcomes. (external link)
• Lindh, Maria; Eilard, Anders; Färkkilä, Martti et al. (2011). Hepatitis C treatment response kinetics and impact of baseline predictors. (external link)
• Pedersen, Court; Alsiö, Åsa; Lagging, Martin 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)
• Moyo, Sabrina John; Njølstad, Gro; Matee, Mecky I et al. (2011). Age specific aetiological agents of diarrhoea in hospitalized children aged less than five years in Dar es Salaam, Tanzania. (external link)
• Hanevik, Kurt; Kristoffersen, Einar Klæboe; Svard, Staffan et al. (2011). Human cellular immune response against giardia lamblia 5 years after acute giardiasis. (external link)
• Rørtveit, Sverre; Skutlaberg, Dag Harald; Langeland, Nina et al. (2011). Impetigo in a population over 8.5 years: Incidence, fusidic acid resistance and molecular characteristics. (external link)
• Kommedal, Øyvind; Lekang, Katrine; Langeland, Nina 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)
• Lindh, Magnus; Lagging, Martin; Färkkilä, Martti 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)
• Blomberg, Bjørn; Langeland, Nina (2010). Tuberculous meningitis and resistance to isoniazid. (external link)
• Robertson, Lucy J; Hanevik, K; Escobedo, Angel A et al. (2010). Giardiasis ? why do the symptoms sometimes never stop?. (external link)
• Wensaas, Knut-Arne; Langeland, Nina; Rørtveit, Guri (2010). Post-infectious gastrointestinal symptoms after acute Giardiasis. A 1-year follow-up in general practice. (external link)
• Alsiö, Åsa; Christensen, Peer Brehm; Färkkilä, Martti et al. (2010). Nonresponder Patients with Hepatitis C Virus Genotype 2/3 Infection: A Question of Low Systemic Interferon Concentrations?. (external link)
• Mellingen, Kristin Mæland; Midtun, Anita; Hanevik, Kurt et al. (2010). Post epidemic giardiasis and gastrointestinal symptoms among preschool children in Bergen, Norway. A cross-sectional study. (external link)
• Kittang, Bård Reiakvam; Langeland, Nina; Skrede, Steinar et al. (2010). Two unusual cases of severe soft tissue infection caused by streptococcus dysgalactiae subsp. equisimilis. (external link)
• Leutscher, Peter Derek Christian; Lagging, Martin; Buhl, Mads Rauning et al. (2010). Evaluation of depression as a risk factor for treatment failure in chronic hepatitis C. (external link)
• Mørch, Kristine; Hanevik, Kurt; Rørtveit, Guri et al. (2009). High rate of fatigue and abdominal symptoms 2 years after an outbreak of giardiasis. (external link)
• Hanevik, Kurt; Dizdar, Vernesa; Langeland, Nina et al. (2009). Development of functional gastrointestinal disorders after Giardia lamblia infection. (external link)
• Mylvaganam, Haima; Bruun, Tina Ingeborg; Vindenes, Hallvard Andreas et al. (2009). Molecular epidemiological investigation of an outbreak of invasive beta-haemolytic streptococcal infection in western Norway. (external link)
• Wensaas, Knut-Arne; Langeland, Nina; Rørtveit, Guri (2009). Prevalence of recurring symptoms after infection with Giardia lamblia in a non-endemic area. (external link)
• Mørch, Kristine; Hanevik, Kurt; Rørtveit, Guri et al. (2009). Severity of Giardia infection associated with post-infectious fatigue and abdominal symptoms two years after. (external link)
• Mørch, Kristine; Hanevik, Kurt; Rørtveit, Guri et al. (2009). Severity of Giardia infection associated with post-infectious fatigue and abdominal symptoms two years after. (external link)
• Wensaas, Knut-Arne; Langeland, Nina; Rørtveit, Guri (2009). Prevalence of recurring symptoms after infection with Giardia lamblia in a non-endemic area. (external link)
• Mørch, Kristine; Hanevik, Kurt; Rørtveit, Guri et al. (2009). High rate of fatigue and abdominal symptoms two years after an outbreak of giardiasis. (external link)
• Kommedal, Øyvind; Kvello, Kristine Ringheim; Skjåstad, Rune 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)
• Robertson, Lucy J; Forberg, Torunn; Hermansen, Lene et al. (2008). Demographics of Giardia infections in Bergen, Norway, subsequent to a waterborne outbreak. (external link)
• Mørch, K; Hanevik, K; Robertson, Lucy J et al. (2008). Treatment-ladder and genetic characterisation of parasites in refractory giardiasis after an outbreak in Norway. (external link)
• Strand, Elisabeth; Robertson, Lucy J; Hanevik, K et al. (2008). Sensitivity of a Giardia antigen test in persistent giardiasis following an extensive outbreak. (external link)
• Kapstad, Heidi; Hanestad, Berit Rokne; Hanestad, BR 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)
• Kittang, Bård Reiakvam; Langeland, Nina; Mylvaganam, Haima (2008). Distribution of emm types and subtypes among noninvasive group A, C and G streptococcal isolates in western Norway. (external link)
• Strand, Elisabeth Astrup; Robertson, Lucy J.; Hanevik, Kurt et al. (2008). Sensitivity of a Giardia antigen test in persistent giardiasis following an extensive outbreak. (external link)
• Baba, Kamaldeen; Hoosen, Anwar A.; Langeland, Nina 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)
• Berg, Aase; Patel, Sam; Langeland, Nina et al. (2008). Falciparum malaria and HIV-1 in hospitalized adults in Maputo, Mozambique: does HIV-infection obscure the malaria diagnosis?. (external link)
• Robertson, Lucy J.; Forberg, Torunn; Hermansen, Lene et al. (2008). Demographics of Giardia infections in Bergen, Norway, subsequent to a waterborne outbreak. (external link)
• Baba, Kamaldeen; Pathak, Sharad; Sviland, Lisbet 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)
• Lagging, Martin; Langeland, Nina; Pedersen, Court 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)
• Hanevik, Kurt; Mørch, Kristine; Eide, Geir Egil et al. (2008). Effects of albendazole/metronidazole or tetracycline/folate treatments on persisting symptoms after Giardia infection: A randomized open clinical trial. (external link)
• Baba, Kamaldeen; Dyrhol-Riise, Anne Ma ; Sviland, Lisbet 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)
• Mørch, Kristine; Hanevik, Kurt; Robertson, Lucy J. et al. (2008). Treatment-ladder and genetic characterisation of parasites in refractory giardiasis after an outbreak in Norway. (external link)
• Baba, Kamaldeen; Sørnes, Steinar; Hoosen, Anwar A. 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)
• Robertson, Lucy J; Forberg, Torunn; Hermansen, Lene et al. (2007). Molecular characterisation of Giardia isolates from clinical infections following a waterborne outbreak. (external link)
• Robertson, Lucy J.; Forberg, Torunn; Hermansen, Lene et al. (2007). Molecular characterisation of Giardia isolates from clinical infections following a waterborne outbreak. (external link)
• Hanevik, Kurt; Hausken, Trygve; Morken, Mette Helvik et al. (2007). Persisting symptoms and duodenal inflammation related to Giardia duodenalis infection. (external link)
• Wensaas, Knut-Arne; Langeland, Nina; Rørtveit, Guri (2007). Avdekking av giardiasisutbruddet i Bergen 2004. (external link)
• Moyo, Sabrina J; Njølstad, Gro; Vainio, M Kirsti 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)
• Tellevik, MG; Sollid, johanna u ericson; Blomberg, Bjørn 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)
• Moyo, Sabrina J.; Maselle, Samuel Y; Matee, Mecky I et al. (2007). Identification of diarrheagenic Escherichia coli isolated from infants and children in Dar es Salaam, Tanzania. (external link)
• Kapstad, H; Rustoen, T; Rustøen, Tone et al. (2007). Changes in pain, stiffness and physical function in patients with osteoarthritis, waiting for hip or knee joint replacement surgery. (external link)
• Blomberg, Bjørn; Manji, Karim P; Urassa, Willy K. et al. (2007). Antimicrobial resistance predicts death in Tanzanian children with bloodstream infections: a prospective cohort study. (external link)
• Nilsen, Arvid E; Kasubi, Mabula Joseph; Mohn, Stein Christian et al. (2007). Herpes simplex virus infection and genital ulcer disease among patients with sexually transmitted infections in Dar es Salaam, Tanzania. (external link)
• Robertson, Lucy J; Hermansen, Lene; Gjerde, Bjørn Kåre et al. (2006). Application of Genotyping during an Extensive Outbreak of Waterborne Giardiasis in Bergen, Norway, during Autumn and Winter 2004. (external link)
• Robertson, Lucy J; Forberg, Torunn; Hermansen, Lene et al. (2006). Cryptosporidium parvum infections in Bergen, Norway, during an extensive outbreak of waterborne giardiasis in autumn and winter 2004. (external link)
• Kasubi, Mabula Joseph; Nilsen, Arvid E; Marsden, Howard S. 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)
• Nilsen, Arvid E; Mwakagile, Davis; Chalamila, Guerino et al. (2006). Demographic and behavioural factors in Tanzanian and Norwegian patients with sexually transmitted infections. (external link)
• Nygård, Karin Maria; Schimmer, Barbara; Søbstad, Øystein et al. (2006). A large community outbreak of waterborne giardiasis-delayed detection in a non-endemic urban area. (external link)
• Ndugulile, Faustine Engelbert; Jureen, Roland; Harthug, Stig 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)
• Shaaly, Aishath; Tellevik, Marit Gjerde; Langeland, Nina et al. (2005). Comparison of serotyping, pulsed field gel electrophoresis and amplified fragment length polymorphism for typing of Streptococcus pneumoniae. (external link)
• Nilsen, Arvid E; Mwakagile, Davis; Marsden, Howard 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)
• Rekand, Tiina; Strand, Inga; Langeland, Nina et al. (2005). Kan poliomyelitt utryddes i nær fremtid?. (external link)
• Sigurdardottir, Katrin Ruth; Harthug, Stig; Digranes, Asbjørn et al. (2005). A multi-centre prospective study of febrile neutropenia in Norway: microbiological findings and antimicrobial susceptibility. (external link)
• Blomberg, Bjørn; Jureen, Roland; Manji, Karim P 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)
• Kasubi, Mabula Joseph; Nilsen, Arvid E; Marsden, Howard S. 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)
• Blomberg, Bjørn; Olsen, Bjørg Evjen; Hinderaker, Sven Gudmund et al. (2005). Antimicrobial resistance in urinary bacterial isolates from pregnant women in rural Tanzania: Implications for public health. (external link)
• Rekand, Tiina; Korv, Janika; Farbu, Elisabeth et al. (2004). Lifestyle and late effects after poliomyelitis. A risk factor study of two populations. (external link)
• Vaagland, Hogne; Blomberg, Bjørn; Krüger, Carsten et al. (2004). Nosocomial outbreak of neonatal Salmonella enterica serotype Enteritidis meningitis in a rural hospital in northern Tanzania. (external link)
• Jureen, Roland; Mohn, S.C.; Harthug, Stig 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)
• Jureen, Roland; Harthug, Stig; Sørnes, Steinar 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)
• Blomberg, Bjørn; Mwakagile, Davis S.M.; Urassa, Willy K. et al. (2004). Surveillance of antimicrobial resistance at a tertiary hospital in Tanzania. (external link)
• Mohn, S.C.; Ulvik, Arve; Jureen, Roland et al. (2004). Duplex real-time PCR assay for rapid detection of ampicillin-resistant Enterococcus faecium. (external link)
• Lugada, Eric Stephen; Mermin, Johathan; Åsjø, Eva Birgitta et al. (2004). Immunoglobulin levels amongst persons with and without human immunodeficiency virus type 1 infection in Uganda and Norway. (external link)
• Lugada, Eric Stephen; Mermin, Johathan; Kaharuza, F. et al. (2004). Population-based hematologic and immunologic reference values for a healthy Ugandan population. (external link)
• Klingenberg, C; Olomi, R; Oneko, M et al. (2004). Neonatal morbidity and mortality in a Tanzanian tertiary care referral hospital. (external link)
• Rekand, Tiina; Male, Rune; Myking, Andreas et al. (2003). Detection of viral sequences in archival spinal cords from fatal cases of poliomyelitis in 1951-1952. (external link)
• Nilsen, Arvid E; Ulvestad, Elling; Marsden, Howard 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)
• Rekand, Tiina; Albrektsen, Grethe; Langeland, Nina et al. (2000). Risk of symptoms related to late effects of poliomyelitis. (external link)
• Harthug, Stig; Eide, Geir Egil; Langeland, Nina (2000). Nosocomial outbreak of ampicillin resistant Enterococcus faecium: Risk factors for infection and fatal outcome. (external link)
• Mohn, SC; Harthug, Stig; Langeland, Nina (2000). Outbreak of multiresistant Enterococcus faecium in a Norwegian university hospital - risk factors for faecal colonisation. (external link)
• Harthug, Stig; Eide, Geir Egil; Langeland, Nina (2000). Nosocomial outbreak of ampicillin resistant Enterococcus faecium. Risk factors for infection and fatal outcome. (external link)
• Urassa, WK; Haule, EA; Kagoma, C 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)
• Roma, B; Worku, S; Shiferaw, T et al. (2000). Antimicrobial susceptibility patterns of Shigella isolated in Awassa. (external link)
• Harthug, Stig; Digranes, A.; Kristiansen, JE et al. (2000). Emergence of vancomycinresistant E. faecium in a clonal hospital outbreak of multiresistant E. faecium. (external link)
• Voltersvik, Pål; Halstensen, Alfred; Langeland, Nina et al. (2000). Eradication of non-typhoid salmonellae in acute enteritis after therapy with ofloxacin for 5 or 10 days. (external link)
• Harthug, Stig; Langeland, Nina; Digranes, Asbjørn et al. (1998). Infeksjoner forårsaket av multiresistente enterokokker i Norge. (external link)
• Langeland, Nina; Haarr, Lars; Mhalu, F. (1998). Prevalence of HSV-2 antibodies among STD clinic patients in Tanzania. (external link)
• Langeland, Nina; Haarr, Lars; Mhalu, F. (1998). Prevalence of HSV-2 antibodies among STD clinic patients in Tanzania. (external link)
• Harthug, Stig; Langeland, Nina; Digranes, Asbjørn et al. (1998). Infeksjoner forårsaket av multiresistente enterokokker i Norge. (external link)
• Eide, T; Marsden, HS; Leib, DA et al. (1998). Identification of the UL4 protein of herpes simplex virus type 1. (external link)
• Harthug, Stig; Langeland, Nina; Digranes, A. et al. (1998). Infeksjoner forårsaket av multiresistente enterokokker i Norge. (external link)
• Rekand, Tiina; Aarli, Johan Arild; Langeland, Nina (1997). Poliomyelitt - ikke en utdødd sykdom. (external link)

Academic lecture

• Zhou, Fan; Vahokoski, Juha; Krammer, Florian 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)
• Johansen, Øystein Haarklau; Abdissa, Alemseged; Zangenberg, Mike et al. (2019). Prolonged and persistent diarrhoea in children: a case-control study in Ethiopia. (external link)
• Johansen, Øystein Haarklau; Abdissa, Alemseged; Zangenberg, Mike 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)
• Sakkestad, Sunniva Todnem; Steinsland, Hans; Skrede, Steinar 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)
• Sakkestad, Sunniva Todnem; Lillebø, Kristine; Steinsland, Hans et al. (2017). Developing a controlled human infection model for testing heat-stable toxoid-based vaccine candidates for enterotoxigenic Escherichia coli diarrhea. (external link)
• Litleskare, Sverre; Rørtveit, Guri; Eide, Geir Egil et al. (2017). Irritable bowel syndrome, chronic fatigue and quality of life ten years after a Giardia lamblia epidemic in Norway 2004. (external link)
• Johansen, Øystein Haarklau; Abdissa, Alemseged; Mekonnen, Zeleke et al. (2017). Low-cost point-of-care diagnosis of Cryptosporidium infection in resource limited settings – the CRYPTO-POC study.. (external link)
• Litleskare, Sverre; Rørtveit, Guri; Eide, Geir Egil et al. (2016). Irritable bowel syndrome and chronic fatigue ten years after giardia infection: a controlled prospective cohort study.. (external link)
• Saghaug, Christina Skår; Sørnes, Steinar; Peirasmaki, Dimitra et al. (2014). Flow cytometric method for characterization of human T cell responses against Giardia lamblia. (external link)
• Langeland, Nina; Robertson, Lucy J (2009). Giardiasis in non-endemic areas: molecular characterization as a predictor for clinical picture, treatment outcome, and persistence. (external link)
• Indrekvam, Kari; Dahlstrøm, Johan; Espehaug, Birgitte et al. (2002). Lang tids overlevelsesanalyse av sementerte og usementerte totalproteser i kneleddet. En norsk multisenterstudie. (external link)
• Mohn, S.C.; Harthug, Stig; Langeland, Nina (1998). Outbreak of multiresistant enterococcus faecium in a Norwegian university hospital - riskfactors for faecal colonization. (external link)
• Harthug, Stig; Langeland, Nina (1998). Outbreak of multiresistant enterococcus faecium in a Norwegian university hospital - riskfactors for infection. (external link)

Errata

• Tran, Trung; Vaage, Eline Benno; Mehta, Adi 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)
• Emberland, Knut Erik; Wensaas, Knut-Arne; Litleskare, Sverre 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)

Poster

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

Short communication

• Brokstad, Rebecca Jane Cox; Brokstad, Karl Albert; Krammer, Florian et al. (2020). Seroconversion in household members of COVID-19 outpatients.. (external link)

Doctoral dissertation

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

Abstract

• Litleskare, Sverre; Rørtveit, Guri; Eide, Geir Egil et al. (2016). Irritable bowel syndrome ten years after acute Giardia lamblia infection: A controlled prospective cohort study. (external link)
• Hausken, Trygve; Dizdar, Vernesa; Hanevik, Kurt et al. (2012). Duodenal mucosal lymphocyte subgroups in patients with persisting abdominal symptoms after Giardia lamblia infection. (external link)
• Rembeck, Karolina; Lindh, Magnus; Pedersen, Court 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)
• Rembeck, Karolina; Alsio, Asa; Christensen, Peer B. 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)
• Rembeck, Karolina; Norkrans, Gunnar P.; Dalgard, Olav 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)
• Alsio, Asa; Langeland, Nina; Pedersen, Court 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)
• Leutscher, Peter Derek Christian; Buhl, Mads Rauning; Lagging, Martin 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)
• Westin, Johan; Lagging, Martin; Pedersen, Carsten et al. (2008). Twelve weeks of treatment is insufficient for HCV genotype 2 and 3 infected patients with steatosis. (external link)
• Lagging, Martin; Pedersen, Carsten; Buhl, Mads Rauning 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)
• Lagging, Martin; Pedersen, Court; Buhl, Mads Rauning 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)

Letter to the editor

• Bruun, Trond; Oppegaard, Oddvar; Kittang, Bård Reiakvam et al. (2016). Etiology of cellulitis and the validity of new and old methods. (external link)
• Mørch, Kristine; Strand, Øystein; Dunlop, Oona et al. (2008). Severe malaria and artesunate treatment, Norway. (external link)

Reader opinion piece

• Robertson, Lucy; Tysnes, Kristoffer; Hanevik, Kurt et al. (2015). Hund som Giardia-kilde i Bergen i 2004 - barking up the wrong tree?. (external link)
• Skrede, Steinar; Nygård, Siri; Langeland, Nina et al. (2013). Aminoglycosides can reduce the risk. (external link)
• Lagging, Martin; Alsiö, Åsa; Langeland, Nina 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)
• Hanevik, Kurt; Dizdar, Vernesa; Langeland, Nina et al. (2011). Tolerability and effect of mesalazine in postinfectious irritable bowel syndrome. (external link)
• Lagging, Martin; Langeland, Nina; Pedersen, Court 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)

Masters thesis

• Saghaug, Christina Skår; Langeland, Nina; Hanevik, Kurt (2014). Developing a flow cytometric method to characterize human T cell responses against the enteric protozoan parasite Giardia lamblia . (external link)
• Tellevik, Marit Gjerde; Langeland, Nina; Aasland, Rein (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)
• Dahle, Leif Atle; Haarr, Lars; Langeland, Nina et al. (2005). Produksjon av glycoprotein C fra herpes simpleks virus type 1 og testing av den biologiske aktiviteten. (external link)

Academic literature review

• Robertson, Lucy J; Hanevik, Kurt; Escobedo, Angel A. et al. (2010). Giardiasis - why do the symptoms sometimes never stop?. (external link)
• Åsjø, Birgitta; Langeland, Nina (2008). Medikamentell resistens vid HIV-infektion. (external link)
• Winje, Brita Askeland; Mannsåker, Turid; Langeland, Nina et al. (2008). Medikamentresistens ved tuberkulose. (external link)

Report

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

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