Case Study Shows Asymptomatic Transmission of COVID-19 in China

https://www.contagionlive.com/news/case-study-shows-asymptomatic-transmission-of-covid19-in-china

Infected but Feeling Fine: The Unwitting Coronavirus Spreaders

https://www.google.ca/amp/s/www.nytimes.com/2020/03/31/health/coronavirus-asymptomatic-transmission.amp.html

Iceland lab testing suggests 50% of coronavirus cases are asymptomatic - CNN

https://www.cnn.com/2020/04/01/europe/iceland-testing-coronavirus-intl/index.html