How Do Variants Arise? Mu Variant, With Potential to Evade Vaccines, Found in All 50 States
http://www.newsweek.com/how-covid-variants-emerge-50-states-mu-nebraska-delta-virus-spread-1628345
The Mu variant of COVID has been detected in every U.S. state after a sample was reported in Nebraska.
The variant, which was first seen in January this year, has made headlines since being declared a variant of interest (VOI) by the World Health Organization (WHO) on August 30.