Another Study Shows Presymptomatic Transmission of SARS-CoV-2

Presymptomatic Transmission of SARS-CoV-2 — Singapore, January 23–March 16, 2020 – CDC Morbidity and Mortality Weekly Report

Commentaries: Coronavirus can spread one to three days before symptoms appear: CDC study – Reuters AND CDC Director warns 25 percent of COVID-19 cases may present no symptoms – New Atlas AND SARS-CoV-2 Readily Shed Early in Infection, Transmissible Before Symptoms Emerge – NEJM Journal Watch

Related: Yes, You Can Spread Coronavirus Even If You Don’t Have Symptoms – Self AND Infected but Feeling Fine: The Unwitting Coronavirus Spreaders – The New York Times AND COVID-19: Undocumented Infections are the Infection Source for 79% of Documented Cases

Related Commentary on Twitter

New @CDCMMWR report on #COVID19 in Singapore shows that some clusters of cases likely resulted from people without symptoms spreading illness. Social distancing and avoiding crowds are key to slowing the spread of COVID-19. https://t.co/kRysZ9lxzO pic.twitter.com/4UJc0KCDPM

— CDC (@CDCgov) April 1, 2020