Article ; Online: Vaccine Effectiveness Against Influenza-Associated Hospitalizations Among Adults, 2018-2019, US Hospitalized Adult Influenza Vaccine Effectiveness Network.
The Journal of infectious diseases
2020 Volume 224, Issue 1, Page(s) 151–163
Abstract: We estimated vaccine effectiveness (VE) for prevention of influenza-associated hospitalizations among adults during the 2018-2019 influenza season. Adults admitted with acute respiratory illness to 14 hospitals of the US Hospitalized Adult Influenza ... ...
Abstract | We estimated vaccine effectiveness (VE) for prevention of influenza-associated hospitalizations among adults during the 2018-2019 influenza season. Adults admitted with acute respiratory illness to 14 hospitals of the US Hospitalized Adult Influenza Vaccine Effectiveness Network (HAIVEN) and testing positive for influenza were cases; patients testing negative were controls. VE was estimated using logistic regression and inverse probability of treatment weighting. We analyzed data from 2863 patients with a mean age of 63 years. Adjusted VE against influenza A(H1N1)pdm09-associated hospitalization was 51% (95% confidence interval [CI], 25%-68%). Adjusted VE against influenza A(H3N2) virus-associated hospitalization was -2% (95% CI, -65% to 37%) and differed significantly by age, with VE of -130% (95% CI, -374% to -27%) among adults 18 to ≤56 years of age. Although vaccination halved the risk of influenza A(H1N1)pdm09-associated hospitalizations, it conferred no protection against influenza A(H3N2)-associated hospitalizations. We observed negative VE for young and middle-aged adults but cannot exclude residual confounding as a potential explanation. |
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MeSH term(s) | Adolescent ; Adult ; Aged ; Aged, 80 and over ; Female ; Hospitalization ; Humans ; Influenza Vaccines/immunology ; Logistic Models ; Male ; Middle Aged ; Vaccination ; Young Adult |
Chemical Substances | Influenza Vaccines |
Language | English |
Publishing date | 2020-12-18 |
Publishing country | United States |
Document type | Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, P.H.S. |
ZDB-ID | 3019-3 |
ISSN | 1537-6613 ; 0022-1899 |
ISSN (online) | 1537-6613 |
ISSN | 0022-1899 |
DOI | 10.1093/infdis/jiaa772 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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