Interim influenza vaccine effectiveness estimates during the 2023 Southern Hemisphere season
Acevedo-Rodriguez, J. G.; Zamudio, C.; Kojima, N.; Krapp, F.; Tsukayama, P.; Neciosup-Vera, C. S.; Gotuzzo, E.; PISAAC Working Group,
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Our findings suggest that a substantial number of people sought care for CLI during an early Southern Hemisphere season during which A/H1N1pdm09 clade 6B.1A.5a.2a viruses predominated. The minority vaccinated benefitted from the A/Victoria/2570/2019 (H1N1)pdm09-like antigen which afforded good protection against illness.
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