ArticleOpen forum infectious diseases2025
Minimal Impact of Prior Common Cold Coronavirus Exposure on Immune Responses to Severe Acute Respiratory Syndrome Coronavirus 2 Vaccination or Infection Risk in Older Adults in Congregate Care.
Article in Open forum infectious diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
16 authors.
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Abstract
Background: Common cold coronaviruses were a frequent cause of respiratory infections in older adults living in congregate care homes before the coronavirus disease 2019 pandemic, which may influence immune responses to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination and infection. We investigated humoral and cellular immune responses to prior common cold coronaviruses and SARS-CoV-2, how they are affected by SARS-CoV-2 vaccination and infection, and their associations with Omicron BA.1 SARS-CoV-2 infections in residents of long-term care and retirement homes. Methods: In SARS-CoV-2 infection-naive residents with 3 monovalent messenger RNA SARS-CoV-2 vaccinations, we measured serum anti-receptor binding domain (RBD) immunoglobulin (Ig) G and IgA antibody titers against SARS-CoV-2 and common cold human coronavirus (HCoV) NL63, HCoV-OC43, and HCoV-229E; ancestral and Omicron BA.1 neutralizing antibodies; and CD4 Results: Anti-RBD IgG HCoV-OC43 titers were positively correlated with SARS-CoV-2 anti-RBD IgG and neutralizing antibody titers. Common cold coronavirus anti-RBD IgA titers, but not anti-RBD IgG titers, increased after SARS-CoV-2 vaccination or infection, and many residents had cross-reactive T cells. Common cold coronavirus humoral immunity was similar in residents without and those with subsequent Omicron BA.1 infection. Conclusions: Despite frequent exposure, and associations of common cold coronavirus and vaccine-induced SARS-CoV-2 humoral immunity, preexisting common cold coronavirus immunity was not associated with Omicron BA.1 infection in residents of long-term care and retirement communities.
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