The former head of the FDA said that while the Delta variant currently accounts for about 10% of coronavirus infections in the U.S., it’s doubling at a rate of every two weeks meaning “it’s probably going to become the dominant strain.”

The former head of the FDA said that while the Delta variant currently accounts for about 10% of coronavirus infections in the U.S., it’s doubling at a rate of every two weeks meaning “it’s probably going to become the dominant strain.”