Shifting seasonal patterns of influenza before, during, and after the COVID-19 pandemic in Shanghai, China: A population-based surveillance study, 2015-2023
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Seasonal influenza activity was disrupted due to the emergence of coronavirus disease 2019 (COVID-19) and the implementation of non-pharmaceutical interventions. In this study, we analyzed weekly influenza-like illness (ILI) cases and influenza positivity rate... ...
