COVID-19: On average only 6% of actual SARS-CoV-2 infections detected worldwide

The number of confirmed cases of coronavirus disease officially issued by countries dramatically understates the true number of infections, a report suggests. Researchers used estimates of COVID-19 mortality and time until death from a recent study to test the quality of records. This shows that countries have only discovered on average about 6% of infections. The number of infections worldwide may already have reached several tens of millions.