Genetic characterization of influenza A viruses circulating in Hong Kong, China, 2023: the first influenza epidemic after the lifting of 2.5 years of COVID-19 non-pharmaceutical interventions

Abstract excerpt

During the COVID-19 pandemic, stringent public health measures led to historically low influenza activity in Hong Kong. However, after these interventions were relaxed in 2023, Influenza A viruses (IAV), including A(H1N1)pdm09 and A(H3N2), rapidly resurfaced. In this study, 1,046 clinical cases collected throughout 2023 underwent comprehensive genomic analysis using Oxford Nanopore Technologies (ONT)....

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