Results 21 to 30 of about 443 (202)

Humoral responses to the SARS-CoV-2 spike and receptor binding domain in context of pre-existing immunity confer broad sarbecovirus neutralization

open access: yesFrontiers in Immunology, 2022
Since the emergence of SARS-CoV-2 (SARS-2), multiple vaccine candidates were developed and studied both preclinically and clinically. Nearly all are based on the SARS-2 spike glycoprotein or its receptor binding domain (RBD).
Blake M. Hauser   +7 more
doaj   +1 more source

Impact of Influenza on Pneumococcal Vaccine Effectiveness during Streptococcus pneumoniae Infection in Aged Murine Lung

open access: yesVaccines, 2020
Changes in innate and adaptive immune responses caused by viral imprinting can have a significant direct or indirect influence on secondary infections and vaccine responses.
Ermias Jirru   +5 more
doaj   +1 more source

Repeated influenza vaccination provides cumulative protection from distinct H3N2 viruses

open access: yesClinical & Translational Immunology, 2021
Objectives Current inactivated influenza vaccines provide suboptimal protection against antigenic drift, and repeated annual vaccinations shape antibody specificity but the effect on protection from infection is not well understood.
Niloufar Kavian   +3 more
doaj   +1 more source

Neutralizing Antibody Response to Sarbecovirus Is Delayed in Sequential Heterologous Immunization

open access: yesViruses, 2022
Antigenic imprinting, which describes the bias of the antibody response due to previous immune history, can influence vaccine effectiveness. While this phenomenon has been reported for viruses such as influenza, there is little understanding of how prior
Huibin Lv   +11 more
doaj   +1 more source

Neutralization, effector function and immune imprinting of Omicron variants

open access: yesNature, 2023
AbstractCurrently circulating SARS-CoV-2 variants have acquired convergent mutations at hot spots in the receptor-binding domain1 (RBD) of the spike protein. The effects of these mutations on viral infection and transmission and the efficacy of vaccines and therapies remains poorly understood.
Amin Addetia   +64 more
openaire   +4 more sources

Immune imprinting as a barrier to effective COVID-19 vaccines

open access: yesCell Reports Medicine, 2023
Wang and colleagues show that immune imprinting impairs neutralizing antibody titers for bivalent mRNA vaccination against SARS-CoV-2 Omicron subvariants. Imprinting from three doses of monovalent vaccine can be alleviated by BA.5 or BQ-lineage breakthrough infection but not by a bivalent booster.1.
Faraone, Julia N., Liu, Shan-Lu
openaire   +2 more sources

Heterologous Immune Responses of Serum IgG and Secretory IgA Against the Spike Protein of Endemic Coronaviruses During Severe COVID-19

open access: yesFrontiers in Immunology, 2022
Defining immune correlates of disease severity is important to better understand the immunopathogenesis in COVID-19. Here we made use of a protein microarray platform to detect IgG- and IgA-reactive antibodies in sera and saliva respectively, and assess ...
Wouter L. Smit   +15 more
doaj   +1 more source

A Complementary Union of SARS-CoV2 Natural and Vaccine Induced Immune Responses

open access: yesFrontiers in Immunology, 2022
Our understanding of the immune responses that follow SARS-CoV-2 infection and vaccination has progressed considerably since the COVID-19 pandemic was first declared on the 11th of March in 2020. Recovery from infection is associated with the development
Joseph Torresi   +4 more
doaj   +1 more source

Back to the Future for Influenza Preimmunity—Looking Back at Influenza Virus History to Infer the Outcome of Future Infections

open access: yesViruses, 2019
The influenza virus-host interaction is a classic arms race. The recurrent and evolving nature of the influenza virus family allows a single host to be infected several times.
Magen Ellen Francis   +2 more
doaj   +1 more source

The Effects of Imprinting and Repeated Seasonal Influenza Vaccination on Adaptive Immunity after Influenza Vaccination

open access: yesVaccines, 2020
(1) Background: The influenza virus continues to cause significant annual morbidity and mortality. The overall efficacy of seasonal influenza vaccination is suboptimal, which is partly due to host immune factors.
Amy C. Sherman   +9 more
doaj   +1 more source

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