Abstract
General population studies have shown strong humoral response following severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination with subsequent waning of anti-spike antibody levels. Vaccine-induced immune responses are often attenuated in frail and older populations, but published data are scarce. We measured SARS-CoV-2 anti-spike antibody levels in long-Term care facility residents and staff following a second vaccination dose with Oxford-AstraZeneca or Pfizer-BioNTech. Vaccination elicited robust antibody responses in older residents, suggesting comparable levels of vaccine-induced immunity to that in the general population. Antibody levels are higher after Pfizer-BioNTech vaccination but fall more rapidly compared to Oxford-AstraZeneca recipients and are enhanced by prior infection in both groups.
Original language | English |
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Pages (from-to) | 1877-1881 |
Number of pages | 5 |
Journal | Journal of Infectious Diseases |
Volume | 226 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1 Dec 2022 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2022 The Author(s). Published by Oxford University Press on behalf of Infectious Diseases Society of America.
Keywords
- COVID-19
- antibodies
- long-Term care facilities
- vaccination
- waning