CDC chief: Variants mean keep guard up on virus
WASHINGTON — The head of the Centers for Disease Control and Prevention is sounding the alarm that recent gains against the coronavirus may be stalling. Dr. Rochelle Walensky says the CDC is looking at data that COVID-19 cases have been increasing the past three days, but more time is needed to see if that is a blip or the start of a trend. Walensky spoke at the White House coronavirus briefing Friday,