On July 27, Bradley's team made history when they administered the first shot in the first Phase 3 clinical trial of a coronavirus vaccine in the United States. Bradley's team went on to enroll more than a thousand volunteers in coronavirus vaccine clinical trials for Pfizer, Moderna and Novavax, but Bradley never got a coronavirus vaccine himself. No, I do not want to wait," Bradley said. Pfizer and Moderna's coronavirus vaccines, the only two so far to receive emergency use authorization from the FDA, use the same scientific approach for activating the immune system. Second, whatever risk the coronavirus vaccine might pose, he says that risk is greatly -- hugely, wildly -- outweighed by the risk of what could happen if he caught Covid-19.

Source: CNN December 20, 2020 19:30 UTC