Biden’s Gamble on Covid Vaccine Depends on a Lot Going Right

“We need to be humble in the face of Mother Nature — we don’t understand all the things that can happen in the next 12 months,“ said Andrew Noymer, associate professor of population health and disease prevention at the University of California Irvine. “I think we can have a normal July 4, and probably will have a normal July 4. But that’s not a watertight guarantee.”