The U.S. and Europe lag on implementing an essential weapon against the virus: contact tracing. Posted on October 3, 2020 by RajanThe U.S. and Europe lag on implementing an essential weapon against the virus: contact tracing.Related Posts:Genetic virus test suggests COVID-19 transmission to…Genetic virus test suggests COVID-19 transmission to…Genetic virus test suggests COVID-19 transmission to…Genetic virus test suggests COVID-19 transmission to…Post navigation← PreviousNext →