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abstractpubmed· Abstract 2020· item PMID:32852264
Abrupt Subsidence of Seasonal Influenza after COVID-19 Outbreak, Hong Kong, China. The onset of the 2019-20 winter influenza season in Hong Kong coincided with the emergence of the coronavirus disease epidemic in neighboring mainland China. After widespread adoption of large-scale social distancing interventions in response to the impending coronavirus disease outbreak, the influenza season ended abruptly with a decrease to a low trough.