At the hearing, Redfield saw first hand some of the opposition to the idea of wearing masks, in an exchange with Rep. Andy Harris (R-MD).
"There is now a cult of masks," said Harris, a physician who has been highly critical of what he says has been an overbearing government response to the Coronavirus outbreak.
"I’m afraid to get a picture taken of me without a mask somewhere, because someone will say how can you possibly, you’re a doctor, how can you not wear a mask?" Harris told Redfield.
But the CDC Director said a combination of masks - and continued social distancing - would be needed not only this summer, but later this year as well.
"Because we're going to need them to be our major defense again, in October, November, and December," Redfield said.
Asked about the massive wave of protests and large gatherings in the wake of the police killing of George Floyd, Redfield said he would strongly recommend that anyone joining those protests wear some type of face covering as well.