Little is known about the infectiveness of asymptomatic patients. Our findings, given a recent report of SARS-CoV-2 transmission from an asymptomatic person to 4 family members,8 nevertheless offer biological plausibility to such reports of transmission by asymptomatic people. A previous study9 analyzing a small number of patients also reported that viral load of asymptomatic SARS-CoV-2 patients was as high as that of symptomatic patients. Although the high viral load we observed in asymptomatic patients raises a distinct possibility of a risk for transmission, our study was not designed to determine this. [end quote]
So many questions? I worry about those who profess to know the answers.