80% of people with Covid-19 are asymptomatic, China figures indicate User bprogramming, in the Beginner Programming and Tech subreddit, 16 Apr 2020
Covid-19: Four fifths of cases are asymptomatic, China figures indicate User SeventhConstellation, in the COVID-19 Discussion subreddit, 05 Apr 2020
British Medical Journal: 4 out of 5 cases of covid19 in China could be asymptomatic User doppl, in the Good Rising Posts subreddit, 05 Apr 2020
British Medical Journal: 4 out of 5 cases of covid19 in China could be asymptomatic User OleoleCholoSimeone, in the COVID-19 subreddit, 05 Apr 2020