무증상 감염? 샘플링 면봉 테스트를 수행해야 합니까?? Symptomatic infection and asymptomatic infection are two sides of the same coin. If there are many asymptomatic infections in the country, there will be many symptomatic infections at the same time. There are currently no confirmed cases in Shanghai, so I backtrack that there is no asymptomatic infection in …