Browsing Bergen Open Research Archive by Author "Jalloh, Sarah Larteley Lartey"
Now showing items 1-15 of 15
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Assay harmonization and use of biological standards to improve the reproducibility of the hemagglutination inhibition assay: A FLUCOP collaborative study
Waldock, Joanna; Zheng, Lingyi; Remarque, Edmond J.; Civet, Alexandre; Hu, Branda; Jalloh, Sarah Larteley Lartey; Cox, Rebecca Jane; Ho, Sammy; Höschler, Katja; Ollinger, Thierry; Trombetta, Claudia Maria; Engelhardt, Othmar; Caillet, Catherine (Journal article; Peer reviewed, 2021)The hemagglutination inhibition (HAI) assay is an established technique for assessing influenza immunity, through measurement of antihemagglutinin antibodies. Improved reproducibility of this assay is required to provide ... -
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 ... -
Augmented CD4+ T-cell and humoral responses after repeated annual influenza vaccination with the same vaccine component A/H1N1pdm09 over 5 years
Trieu, Mai Chi; Zhou, Fan; Jalloh, Sarah Larteley Lartey; Sridhar, Saranya; Mjaaland, Siri; Cox, Rebecca Jane (Peer reviewed; Journal article, 2018-08-14)Annual seasonal influenza vaccination is recommended for high-risk populations and often occupational groups such as healthcare workers (HCWs). Repeated annual vaccination has been reported to either have no impact or ... -
Dissecting the hemagglutinin head and stalk-specific IgG antibody response in healthcare workers following pandemic H1N1 vaccination
Tete, Sarah; Krammer, Florain; Jalloh, Sarah Larteley Lartey; Bredholt, Geir; Wood, John M.; Skrede, Steinar; Cox, Rebecca Jane (Peer reviewed; Journal article, 2016-07-28)Traditionally, neutralising antibodies that are directed to the major surface glycoprotein hemagglutinin (HA) head domain are measured as surrogate correlates of protection against influenza. In addition to neutralization, ... -
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 ... -
An external quality assessment feasibility study; cross laboratory comparison of haemagglutination inhibition assay and microneutralization assay performance for seasonal influenza serology testing: A FLUCOP study
Waldock, Joanna; Weiss, Carol D.; Wang, Wei; Levine, Min Z.; Jefferson, Stacie N.; Ho, Sammy; Hoschler, Katja; Londt, Brandon Z.; Masat, Elisa; Carolan, Louise; Sánchez-Ovando, Stephany; Fox, Annette; Watanabe, Shinji; Akimoto, Miki; Sato, Aya; Kishida, Noriko; Buys, Amelia; Maake, Lorens; Fourie, Cardia; Caillet, Catherine; Raynaud, Sandrine; Webby, Richard J.; DeBeauchamp, Jennifer; Cox, Rebecca Jane; Jalloh, Sarah Larteley Lartey; Trombetta, Claudia M.; Marchi, Serena; Montomoli, Emanuele; Sanz-Muñoz, Iván; Eiros, José María; Sánchez-Martínez, Javier; Duijsings, Danny; Engelhardt, Othmar G. (Journal article; Peer reviewed, 2023)Introduction: External Quality Assessment (EQA) schemes are designed to provide a snapshot of laboratory proficiency, identifying issues and providing feedback to improve laboratory performance and inter-laboratory agreement ... -
Haemagglutination inhibition and virus microneutralisation serology assays: use of harmonised protocols and biological standards in seasonal influenza serology testing and their impact on inter-laboratory variation and assay correlation: A FLUCOP collaborative study
Waldock, Joanna; Remarque, Edmond J.; Zheng, Lingyi; Ho, Sammy; Hoschler, Katja; Neumann, Britta; Sediri-Schön, Hanna; Trombetta, Claudia M.; Montomoli, Emanuele; Marchi, Serena; Lapini, Giulia; Zhou, Fan; Jalloh, Sarah Larteley Lartey; Cox, Rebecca Jane; Facchini, Marzia; Castrucci, Maria Rita; Friel, Damien; Ollinger, Thierry; Caillet, Catherine; Music, Nedzad; Palladino, Giuseppe; Engelhardt, Othmar G. (Journal article; Peer reviewed, 2023)Introduction: The haemagglutination inhibition assay (HAI) and the virus microneutralisation assay (MN) are long-established methods for quantifying antibodies against influenza viruses. Despite their widespread use, both ... -
Humoral and cellular immune responses after pandemic and seasonal influenza vaccination in humans
Jalloh, Sarah Larteley Lartey (Doctoral thesis, 2022-06-22)Vaccination is the most effective prophylaxis against epidemic and pandemic influenza. Annual seasonal influenza vaccination is recommended for high-risk groups such as younger children <5 years old and occupational workers ... -
Impact of Pre-Existing Immunity and Age on Antibody Responses to Live Attenuated Influenza Vaccine
Hoen, Lukas Anders Kryger; Jalloh, Sarah Larteley Lartey; Zhou, Fan; Pathirana, Rishi Delan; Krammer, Florian; Mohn, Kristin Greve-Isdahl; Cox, Rebecca Jane; Brokstad, Karl Albert (Journal article; Peer reviewed, 2024-08-01)Live attenuated influenza vaccines (LAIV) typically induce a poor hemagglutination inhibition (HI) response, which is the standard correlate of protection for inactivated influenza vaccines. The significance of the HI ... -
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 ... -
SARS-CoV-2 specific immune responses in overweight and obese COVID-19 patients
Onyango, Therese Bredholt; Zhou, Fan; Bredholt, Geir; Brokstad, Karl Albert; Jalloh, Sarah Larteley Lartey; Mohn, Kristin Greve-Isdahl; Özgümüs, Türküler; Kittang, Bård Reiakvam; Linchausen, Dagrun Waag; Shafiani, Shahin; Elyanow, Rebecca; Blomberg, Bjørn; Langeland, Nina; Cox, Rebecca Jane (Journal article; Peer reviewed, 2023)Obesity is a known risk factor for severe respiratory tract infections. In this prospective study, we assessed the impact of being obese or overweight on longitudinal SARS-CoV-2 humoral and cellular responses up to 18 ... -
Seasonal influenza vaccination expands hemagglutinin-specific antibody breadth to older and future A/H3N2 viruses
Ertesvåg, Nina Urke; Cox, Rebecca Jane; Jalloh, Sarah Larteley Lartey; Mohn, Kristin Greve-Isdahl; Brokstad, Karl Albert; Trieu, Mai Chi (Journal article; Peer reviewed, 2022)History of influenza A/H3N2 exposure, especially childhood infection, shape antibody responses after influenza vaccination and infection, but have not been extensively studied. We investigated the breadth and durability ... -
Single dose vaccination of the ASO3-adjuvanted A (H1N1)pdm09 monovalent vaccine in health care workers elicits homologous and cross-reactive cellular and humoral responses to H1N1 strains
Jalloh, Sarah Larteley Lartey; Pathirana, Rishi; Zhou, Fan; Jul-Larsen, Åsne; Montomoli, Emanuele; Wood, John; Cox, Rebecca Jane (Peer reviewed; Journal article, 2015)Healthcare workers (HCW) were prioritized for vaccination during the 2009 influenza A(H1N1)pdm09 pandemic. We conducted a clinical trial in October 2009 where 237 HCWs were immunized with a AS03-adjuvanted A(H1N1)pdm09 ...