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Science ; 370(6513): 237-241, 2020 10 09.
Article in English | MEDLINE | ID: mdl-32792465

ABSTRACT

A universal vaccine against influenza would ideally generate protective immune responses that are not only broadly reactive against multiple influenza strains but also long-lasting. Because long-term serum antibody levels are maintained by bone marrow plasma cells (BMPCs), we investigated the production and maintenance of these cells after influenza vaccination. We found increased numbers of influenza-specific BMPCs 4 weeks after immunization with the seasonal inactivated influenza vaccine, but numbers returned to near their prevaccination levels after 1 year. This decline was driven by the loss of BMPCs induced by the vaccine, whereas preexisting BMPCs were maintained. Our results suggest that most BMPCs generated by influenza vaccination in adults are short-lived. Designing strategies to enhance their persistence will be a key challenge for the next generation of influenza vaccines.


Subject(s)
Bone Marrow Cells/immunology , Influenza Vaccines/immunology , Influenza, Human/prevention & control , Plasma Cells/immunology , Animals , Antibodies, Viral/blood , Disease Models, Animal , Humans , Immunoglobulin G/blood , Influenza, Human/blood , Influenza, Human/immunology , Vaccination
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