Global variability of influenza activity and virus subtype circulation from 2011 to 2023.

BMJ Open Respir Res · 2023 · PMC10577751 · PMID 37491131

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showed a trendno p-value reported

During the COVID-19 pandemic, however, influenza activity showed a trend of first decline and then rise in all WHO regions, and few B/Yamagata viruses were detected during the COVID-19 pandemic.

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