COVID-19's family can't enter the ward.

What you want to ask is that COVID-19's family can't enter the ward? COVID-19's family can't enter the ward. COVID-19 is a highly contagious disease. In order to curb the spread of the virus and reduce the risk of infection, many hospitals have taken a series of prevention and control measures when treating and isolating patients. These include restricting patients' families and visitors from entering the ward, which can reduce the risk of virus transmission to some extent.