The number of influenza virus detections declined tremendously after the emergence and worldwide spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2); an effect most likely caused by non-pharmaceutical interventions to slow the spread of SARS-CoV-2. Recent data suggest that influenza virus detection has slightly increased in parts of the world, perhaps owing to the relaxation of social distancing measures.
Keywords: Evolution; Influenza virus; SARS-CoV-2.
Copyright and License information: Editorial Office of CCDCW, Chinese Center for Disease Control and Prevention 2021.