User:Calthinus/Asymptomatic cases

Classified data seen by South China Morning Post -- "silent carriers" are 1/3 of cases; 43,000 who tested positive did not have "immediate symptoms"

Yokohama's Diamond Princess -- one half of those who had it were asymptomatic

similar results in Iceland, which tests higher proportion of its citizens than anywhere else as of mid/late March ]https://www.buzzfeed.com/albertonardelli/coronavirus-testing-iceland]

Significantly contagious "silent carriers" may be as high as 80% of cases, while 86% (95% confidence interval: 82-90%) of cases are undocumented

Stanford study