Researchers from from Southern Illinois University Carbondale say the earliest appearance of new variant, called 20C-U, was in Texas in May 2020 and is most highly prevalent in the Upper Midwest.

https://www.dailymail.co.uk/health/article-9147865/Third-homegrown-coronavirus-variant-U-S-researchers-say-emerged-Texas-MAY.html?ns_mchannel=rss&ito=1490&ns_campaign=1490 ]قرااء المزيد ..... [/url]


Coronavirus US: Third homegrown variant may have originated in MAY