How many people will this virus infect?
Chinese authorities have blocked the central city of the outbreak, and Chinese researchers quickly shared data about the virus with who and other researchers. But the number of cases has been rising. Ben cowling, an epidemiologist at the University of Hong Kong, said at the best of times, fewer people would be infected because the effects of controls would start to work. But it is too early to judge whether the isolation measures and the widespread use of masks are effective. The incubation period of the virus is up to 14 days, longer than most of the control measures that have been taken.
So here we suggest people wear disposable surgical masks 3--ply to be protective.