Influenza Incidence and Vaccine Effectiveness During the Southern Hemisphere Influenza Season — Chile, 2022
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The COVID-19 pandemic has affected influenza virus transmission, with historically low activity, atypical timing, or altered duration of influenza seasons during 2020–22. Community mitigation measures implemented since 2020, including physical distancing and face mask use, have, in part, been credited for low influenza detections globally during the pandemic, compared with those during prepandemic seasons. |