Implementation of the continuous group care
The intervention was conducted between July and December 2020 with the COVID-19 pandemic in China. However, Hainan, being an island province, effectively curtailed exogenous transmission through timely implementation of island closure management measures, resulting in swift containment of the COVID-19 outbreak. In October 2020, there was only one additional imported case of COVID-19 due to the surge in tourism during National Day [