A meta-analysis involving 95 studies with around 30,000,000 individuals has shown that the pooled percentage of asymptomatic COVID-19 infections was 0.25% in the tested population and 40.5% in people with confirmed COVID infection.

The meta-analysis included 29,776,306 tested individuals. Among these, 11,516 had asymptomatic infection. The pooled percentage of asymptomatic infections among the tested subjects was 0.25%. The percentage was found to be higher among nursing home residents or staff, air or cruise ship travelers, and pregnant women, in comparison with the pooled percentage, in an analysis of different study populations. Additionally, the pooled percentage of asymptomatic infections among the confirmed cases was 40.5%. The percentage was again higher among pregnant women, air or cruise ship travelers, and nursing home residents or staff, at 54.11%, 52.91%, and 47.53%, respectively. The findings are published in JAMA Network Open… (Medscape)