Asymptomatic COVID-19 cases are unlikely to cause large-scale infection as long as the public takes protective measures, a Chinese health official said on Wednesday.
Feng Zijian, Deputy Director of the Chinese Center for Disease Control and Prevention, told a press conference that asymptomatic COVID-19 patients carry a small amount of the virus and are less infectious.
It usually requires multiple close contacts for a long period of time without personal protection for asymptomatic cases to cause transmission of the virus, he added.
China has recently been facing local outbreaks and sporadic infections of COVID-19. (Xinhua/NAN)