Influenza Vaccine Effectiveness Against Influenza-Associated Hospitalization in Hong Kong Children Aged 9 Months to 17 Years, March-June 2023.

Benjamin J. Cowling,Mike Y. W. Kwan,Caitriona Murphy,Eunice L. Y. Chan,Joshua S. C. Wong,Sheena G. Sullivan,Malik Peiris,So-Lun Lee

Journal of the Pediatric Infectious Diseases Society（2023）

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摘要

In March-June 2023, we conducted a test-negative study in 1671 children who were hospitalized with acute respiratory illness in Hong Kong. Two hundred and eighty-six children (17.2%) were tested positive for influenza virus including 188 with A(H1N1). We estimated influenza vaccine effectiveness against influenza-associated hospitalization as 69.6% (95% confidence interval: 49.3%, 81.7%).

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influenza,vaccination,vaccine effectiveness

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