Delta-variant rates doubled in the US in 2 weeks, Fauci said: from 9.9% to 20.6%. It could derail the US COVID-19 recovery.
The Delta variant is the "greatest threat" to US COVID-19 efforts, Dr. Anthony Fauci said Tuesday. He said its prevalence in the US doubled within two weeks, a worrying sign. The variant is more transmissible and dangerous than other types of the coronavirus. See more stories on Insider's...