The Centers for Disease Control and Prevention has reclassified the Delta variant of COVID-19 as one “of concern,” underscoring how much more prevalent the B.1.617.2 variant first identified in India is becoming in the U.S.
The Centers for Disease Control and Prevention has reclassified the Delta variant of COVID-19 as one “of concern,” underscoring how much more prevalent the B.1.617.2 variant first identified in India is becoming in the U.S.