WASHINGTON — Dr. Anthony Fauci says people will need to wear masks “for several, several months” to avoid the coronavirus as vaccinations are rolled out.

The government’s top infectious disease expert told ABC’s “Good Morning America” on Friday by the time 75% to 80% of the population is vaccinated, “the level of virus in the community could be so low that you could start pulling back a bit on what are stringent public health measures.”

But Fauci says any relaxing of safety measures needs to be done “prudently and gradually.”

U.S. government researchers have found that two masks are better than one in slowing the spread of the coronavirus, but health officials have stopped short of recommending everyone double up.

Fauci says the U.S. has contracted for 600 million vaccine doses, enough to vaccinate everyone with two doses. He says as spring turns into summer, everyone should be eligible to receive a vaccine.

“As we go from April to May to June and then hopefully by July, we’ll be at that point where we have enough vaccine for virtually everyone,” Fauci said.