A shared mutation in the covid-19 virus from two infected people who had no contact suggests the coronavirus has been quietly spreading in the US for weeks
Source:
https://www.newscientist.com/article/2235972-coronavirus-may-have-been-circulating-undetected-in-the-us-for-6-weeks/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home