National Institute of Allergy and Infectious Diseases head Anthony Fauci said that the Centers for Disease Control and Prevention “didn’t flip flop” by issuing new masking guidelines for schools and certain high transmission areas.
The reason for the change in guidance, he said in an MSNBC interview Tuesday, is due to the so-called “Delta” COVID-19 strain. Federal health officials said the Delta variant now comprises most of the new COVID-19 cases in the United States.
