Return of norovirus and rotavirus activities in winter 2020/21 in an Asian city with strict zero COVID-19 control strategy, Hong Kong, China

Abstract

We observed active norovirus and rotavirus circulation in winter 2020/21 in Hong Kong while a variety of non-pharmaceutical interventions to eliminate COVID-19 were effective. The initial collateral benefit of countermeasures for COVID-19 to reduce viral gastroenteritis burden is not sustainable even in a city with continual zero COVID-19 control strategy.