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The incidence of asymptomatic infections with COVID-19 in different studies.
| China8 (n = 72,314) | Japan9 (n = 565) | Diamond Princess10 (n = 3711) | Korea11 (n = 28) | Washington12 (n = 76) | Wuhan Children13 (n = 1391) | |
|---|---|---|---|---|---|---|
| RT-PCR positive cases | 56,128 | 13 | 634 | 28 | 23 | 171 |
| Asymptomatic cases | 889 | 4 | 328 | 3 | 13 | 27 |
| Incidence rate (%)a | 1.6 | 30.8 | 51.7 | 10.7 | 56.5 | 15.8 |
As of the data published in the literature, the proportion of asymptomatic infections in the population with positive nucleic acid test.
