Browsing Bergen Open Research Archive by Author "Mohn, Kristin Greve-Isdahl"

Now showing items 1-20 of 26

    • Attack rates amongst household members of outpatients with confirmed COVID-19 in Bergen, Norway: A case-ascertained study 

      Kuwelker, Kanika; Zhou, Fan; Blomberg, Bjørn; Jalloh, Sarah Larteley Lartey; Brokstad, Karl Albert; Trieu, Mai Chi; Bansal, Amit; Madsen, Anders; Krammer, Florian; Mohn, Kristin Greve-Isdahl; Tøndel, Camilla; Linchausen, Dagrunn Waag; Cox, Rebecca Jane; Langeland, Nina (Journal article; Peer reviewed, 2021)
      Background Households studies reflect the natural spread of SARS-CoV-2 in immunologically naive populations with limited preventive measures to control transmission. We hypothesise that seropositivity provides more ...

    • Boosting of cross-reactive and protection-associated T cells in children after live attenuated influenza vaccination 

      Mohn, Kristin Greve-Isdahl; Zhou, Fan; Brokstad, Karl Albert; Sridhar, Saranya; Cox, Rebecca Jane (Peer reviewed; Journal article, 2017-05)
      Background. Live attenuated influenza vaccines (LAIVs) stimulate a multifaceted immune response including cellular immunity, which may provide protection against newly emerging strains. This study shows proof of concept ...

    • Cost-Effectiveness of Vaccination of Older Adults with an MF59®-Adjuvanted Quadrivalent Influenza Vaccine Compared to Standard-Dose and High-Dose Vaccines in Denmark, Norway, and Sweden 

      Jacob, Jorge; Biering-Sørensen, Tor; Holger Ehlers, Lars; Edwards, Christina Hansen; Mohn, Kristin Greve-Isdahl; Nilsson, Anna; Hjelmgren, Jonas; Ma, Wenkang; Sharma, Yuvraj; Ciglia, Emanuele; Mould-Quevedo, Joaquin (Journal article; Peer reviewed, 2023)
      Individuals aged 65 years and above are at increased risk of complications and death from influenza compared with any other age group. Enhanced vaccines, as the MF59®-adjuvanted quadrivalent influenza vaccine (aQIV) and ...

    • COVID-19 and venous thromboembolism - prophylaxis and treatment 

      Kvåle, Reidar; Azrakhsh, , Nessar Ahmad; Mohn, Kristin Greve-Isdahl; Aanerud, Marianne; Guttormsen, Anne Berit; Reikvam, Håkon (Journal article; Peer reviewed, 2020)

    • Durable immune responses after BNT162b2 vaccination in home-dwelling old adults 

      Hansen, Lena; Brokstad, Karl Albert; Bansal, Amit; Zhou, Fan; Bredholt, Geir; Onyango, Therese Bredholt; Sandnes, Helene Heitmann; Elyanow, Rebecca; Madsen, Anders; Trieu, Mai Chi; Sævik, Marianne; Søyland, Hanne; Olofsson, Jan Stefan; Vahokoski, Juha; Ertesvåg, Nina Urke; Fjelltveit, Elisabeth Berg; Shafiani, Shahin; Tøndel, Camilla; Chapman, Heidi; Kaplan, Ian; Mohn, Kristin Greve-Isdahl; Langeland, Nina; Cox, Rebecca Jane (Journal article; Peer reviewed, 2023)
      Objectives Elderly are an understudied, high-risk group vulnerable to severe COVID-19. We comprehensively analyzed the durability of humoral and cellular immune responses after BNT162b2 vaccination and SARS-CoV-2 infection ...

    • Durable T-cellular and humoral responses in SARS-CoV-2 hospitalized and community patients 

      Mohn, Kristin Greve-Isdahl; Bredholt, Geir; Zhou, Fan; Madsen, Anders Aasgaard; Onyango, Therese Bredholt; Fjelltveit, Elisabeth Berg; Jalloh, Sarah Larteley Lartey; Brokstad, Karl Albert; Cantoni, Diego; Mayora-Neto, Martin; Temperton, Nigel; Langeland, Nina; Cox, Rebecca Jane (Journal article; Peer reviewed, 2022)
      Background Neutralizing antibodies are important for protection against the pandemic SARS-CoV-2 virus, and long-term memory responses determine the risk of re-infection or boosting after vaccination. T-cellular responses ...

    • Early Induction of Cross-Reactive CD8+ T-Cell Responses in Tonsils After Live-Attenuated Influenza Vaccination in Children 

      Mohn, Kristin Greve-Isdahl; Brokstad, Karl Albert; Islam, Shahinul; Oftung, Fredrik; Tøndel, Camilla; Aarstad, Hans Jørgen; Cox, Rebecca Jane (Journal article; Peer reviewed, 2020)
      Background Live-attenuated influenza vaccine (LAIV) was licensed for prophylaxis of children 2–17 years old in Europe in 2012 and is administered as a nasal spray. Live-attenuated influenza vaccine induces both mucosal ...

    • The expression of B & T cell activation markers in children’s tonsils following live attenuated influenza vaccine 

      Panapasa, Jack A.; Cox, Rebecca Jane; Mohn, Kristin Greve-Isdahl; Aqrawi, Lara Adnan; Brokstad, Karl Albert (Peer reviewed; Journal article, 2015-07-06)
      Live attenuated influenza vaccines (LAIV) can prevent influenza illness and death in children. The absence of known correlates of protection induced by LAIV requires human studies of underlying mechanisms of vaccine-induced ...

    • Immune response to influenza after vaccination and infection 

      Mohn, Kristin Greve-Isdahl (Doctoral thesis, 2016-09-23)
      Influenza causes great human morbidity and mortality from annual epidemics and pandemics occurring at irregular intervals. The socioeconomic impact of influenza is significant with 5% of adults and 20% of children infected, ...

    • Immune Responses in Acute and Convalescent Patients with Mild, Moderate and Severe Disease during the 2009 Influenza Pandemic in Norway 

      Mohn, Kristin Greve-Isdahl; Cox, Rebecca Jane; Tunheim, Gro; Berdal, Jan Erik; Hauge, Anna G; Jul-Larsen, Åsne; Peters, Bjørn; Oftung, Fredrik; Jonassen, Christine M; Mjaaland, Siri (Peer reviewed; Journal article, 2015-11-25)
      Increased understanding of immune responses influencing clinical severity during pandemic influenza infection is important for improved treatment and vaccine development. In this study we recruited 46 adult patients during ...

    • Live attenuated influenza vaccine in children induces b-cell responses in tonsils 

      Mohn, Kristin Greve-Isdahl; Brokstad, Karl Albert; Pathirana, Rishi; Bredholt, Geir; Jul-Larsen, Åsne; Trieu, Mai Chi; Jalloh, Sarah Larteley Lartey; Montemoli, Emanuele; Tøndel, Camilla; Aarstad, Hans Jørgen; Cox, Rebecca Jane (Peer reviewed; Journal article, 2016)
      Background. Tonsils play a key role in eliciting immune responses against respiratory pathogens. Little is known about how tonsils contribute to the local immune response after intranasal vaccination. Here, we uniquely ...

    • Live-attenuated influenza vaccine induces tonsillar follicular T helper cell responses that correlate with antibody induction 

      Jalloh, Sarah Larteley Lartey; Zhou, Fan; Brokstad, Karl Albert; Mohn, Kristin Greve-Isdahl; Slettevoll, Steffen Aleksander; Pathirana, Rishi; Cox, Rebecca Jane (Journal article; Peer reviewed, 2020)
      Background: Influenza remains a major threat to public health. Live-attenuated influenza vaccines (LAIV) have been shown to be effective, particularly in children. Follicular T helper (TFH) cells provide B-cell help and ...

    • Long COVID in a prospective cohort of home-isolated patients 

      Blomberg, Bjørn; Mohn, Kristin Greve-Isdahl; Brokstad, Karl Albert; Zhou, Fan; Linchausen, Dagrunn Waag; Hansen, Bernt-Are; Jalloh, Sarah Larteley Lartey; Onyango, Therese Bredholt; Kuwelker, Kanika; Sævik, Marianne; Bartsch, Hauke; Tøndel, Camilla; Kittang, Bård Reiakvam; Cox, Rebecca Jane; Langeland, Nina (Journal article; Peer reviewed, 2021)
      Long-term complications after coronavirus disease 2019 (COVID-19) are common in hospitalized patients, but the spectrum of symptoms in milder cases needs further investigation. We conducted a long-term follow-up in a ...

    • Longevity of B-cell and T-cell responses after live attenuated influenza vaccination in children 

      Mohn, Kristin Greve-Isdahl; Bredholt, Geir; Brokstad, Karl Albert; Pathirana, Rishi; Aarstad, Hans Jørgen; Tøndel, Camilla; Cox, Rebecca Jane (Peer reviewed; Journal article, 2015-05-15)
      Background. The live attenuated influenza vaccine (LAIV) is the preferred vaccine for children, but the mechanisms behind protective immune responses are unclear, and the duration of immunity remains to be elucidated. This ...

    • Lower antibiotic prescription rates in hospitalized COVID-19 patients than influenza patients, a prospective study 

      Fjelltveit, Elisabeth Berg; Cox, Rebecca Jane; Kittang, Bård Reiakvam; Blomberg, Bjørn; Buanes, Eirik A.; Langeland, Nina; Mohn, Kristin Greve-Isdahl (Journal article; Peer reviewed, 2022)
      Background COVID-19 patients are extensively treated with antibiotics despite few bacterial complications. We aimed to study antibiotic use in hospitalized COVID-19 patients compared to influenza patients in two consecutive ...

    • The Performances of Three Commercially Available Assays for the Detection of SARS‐CoV‐2 Antibodies at Different Time Points Following SARS‐CoV‐2 Infection 

      Syre, Heidi; Obreque, Marius Eduardo Brå; Dalen, Ingvild; Riis, Åse Garløv; Berg, Åse; Löhr, Iren Høyland; Sundal, Jon; Kleppe, Lars Kåre Selland; Vadla, May Sissel; Lenning, Ole Bernt; Olofsson, Jan Stefan; Mohn, Kristin Greve-Isdahl; Tøndel, Camilla; Blomberg, Bjørn; Trieu, Mai Chi; Langeland, Nina; Cox, Rebecca Jane (Journal article; Peer reviewed, 2022)
      The aim of this study was to evaluate the performances of three commercially available antibody assays for the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies at different time points ...

    • Persistent Fever and Positive PCR 90 Days Post-SARS-CoV-2 Infection in a Rituximab-Treated Patient: A Case of Late Antiviral Treatment 

      Ertesvåg, Nina Urke; Sakkestad, Sunniva Todnem; Zhou, Fan; Hoff, Ingrid; Kristiansen, Trygve; Jonassen, Trygve Müller; Follesø, Elisabeth; Brokstad, Karl Albert; Dyrhovden, Ruben; Mohn, Kristin Greve-Isdahl (Journal article; Peer reviewed, 2022)
      Background: Persistent fever after SARS-CoV-2 infection in rituximab-treated patients has been reported. Due to reduced sensitivity in conventional sampling methods and unspecific symptoms in these patients, distinguishing ...

    • Post COVID-19 condition after delta infection and omicron reinfection in children and adolescents 

      Ertesvåg, Nina Urke; Iversen, Arild; Blomberg, Bjørn; Özgümüs, Türküler; Rijal, Pramila; Fjelltveit, Elisabeth Berg; Cox, Rebecca Jane; Langeland, Nina; Haug, Kjell; Sandnes, Helene Heitmann; Mohn, Kristin Greve-Isdahl; Olofsson, Jan Stefan; Sævik, Marianne; Brokstad, Christopher James; Kuwelker, Kanika; Heienberg, Kristin (Journal article; Peer reviewed, 2023)
      Background: The burden of COVID-19 in children and adolescents has increased during the delta and omicron waves, necessitating studies of long-term symptoms such as fatigue, dyspnoea and cognitive problems. Furthermore, ...

    • A rapid antibody screening haemagglutination test for predicting immunity to SARS-CoV-2 variants of concern 

      Ertesvåg, Nina Urke; Xiao, Julie; Zhou, Fan; Ljostveit, Sonja; Sandnes, Helene Heitmann; Lartey, Sarah; Sævik, Marianne; Hansen, Lena; Madsen, Anders; Mohn, Kristin Greve-Isdahl; Fjelltveit, Elisabeth Berg; Olofsson, Jan Stefan; Tan, Tiong Kit; Rijal, Pramilia; Schimanski, Lisa; Øyen, Siri; Brokstad, Karl Albert; Dunachie, Susanna; Jämsén, Anni; James, William S.; Harding, Adam C.; Harvala, Heli; Nguyen, Dung; Roberts, David; Patel, Monika; Gopal, Robin; Zambon, Maria; Wei, Leiyan; Gilbert-Jaramillo, Javier; Knight, Michael L.; Vaughan-Jackson, Alun; Dupont, Maeva; Lamikanra, Abigail A.; Klennerman, Paul; Townsend, Alain; Tøndel, Camilla; Kuwelker, Kanika; Blomberg, Bjørn; Bredholt, Geir; Onyango, Therese Bredholt; Vahokoski, Juha; Bansal, Amit; Trieu, Mai Chi; Amdam, Håkon; Akselsen, Per Espen; Skorge, Trude Duelien; Okkenhaug, Liv Heiberg; Linchausen, Dagrun Waag; Langeland, Nina; Cox Brokstad, Rebecca Jane (Journal article; Peer reviewed, 2022)
      Background: Evaluation of susceptibility to emerging SARS-CoV-2 variants of concern (VOC) requires rapid screening tests for neutralising antibodies which provide protection. Methods: Firstly, we developed a receptor-binding ...

    • Risk assessment and antibody responses to SARS-CoV-2 in healthcare workers 

      Bansal, Amit; Trieu, Mai Chi; Mohn, Kristin Greve-Isdahl; Madsen, Anders; Olofsson, Jan Stefan; Sandnes, Helene Heitmann; Sævik, Marianne; Søyland, Hanne; Hansen, Lena; Onyango, Therese Bredholt; Tøndel, Camilla; Brokstad, Karl Albert; Syre, Heidi; Riis, Åse Garløv; Langeland, Nina; Cox, Rebecca Jane (Journal article; Peer reviewed, 2023)
      Background: Preventing infection in healthcare workers (HCWs) is crucial for protecting healthcare systems during the COVID-19 pandemic. Here, we investigated the seroepidemiology of SARS-CoV-2 in HCWs in Norway with ...