E. John Wherry of the Perelman School of Medicine compares vaccine tweaks to periodic software updates and advises waiting four to six months between boosters.
https://bit.ly/3TmzgcQ Associated PressE. John Wherry of the Perelman School of Medicine compares vaccine tweaks to periodic software updates and advises waiting four to six months between boosters.
https://bit.ly/3TmzgcQ Associated Press