Missouri lab detected Delta COVID-19 variant in wastewater weeks before first case was reported
https://healthell.blogspot.com/2021/07/missouri-lab-detected-delta-covid-19.html
Missouri lab detected Delta COVID-19 variant in wastewater weeks before first case was reported

A University of Missouri professor who is leading a study of COVID-19 in wastewater said his lab detected the Delta variant weeks before the first case was reported.