Influenza virus circulation and vaccine effectiveness during June 2021–May 2023 in Thailand
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CC-BY-NC-ND-4.0
Abstract
We evaluated 2023 Southern Hemisphere influenza vaccine effectiveness against medically attended illness using surveillance data from nine Thai hospitals and a test-negative design. During June 2022–May 2023, influenza vaccine provided protection against seeking care for influenza illness (adjusted vaccine effectiveness 43%; 95% confidence interval 15–61).
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- europepmc
- last seen: 2026-05-19T01:45:01.086888+00:00
- unpaywall
- last seen: 2026-05-22T02:00:06.705733+00:00
License: CC-BY-NC-ND-4.0