COVID-19: Undocumented Infections are the Infection Source for 79% of Documented Cases

Substantial undocumented infection facilitates the rapid dissemination of novel coronavirus (SARS-CoV2) – Science (free)

Commentaries: 80% of COVID-19 spreads from people who don’t know they are sick – UPI (free) AND Coronavirus Is Hiding in Plain Sight – The New York Times (10 articles per month are free)

Related: COVID-19: Who Is Infectious? – Forbes (free) AND Infected people without symptoms might be driving the spread of coronavirus more than we realized – CNN (free)