A key Food and Drug Administration advisory panel on Friday unanimously backed Johnson & Johnson’s single-shot coronavirus vaccine for emergency use, a critical step paving the way to distribute a third preventative treatment in the U.S. next week.The nonbinding decision, which was adopted 22-0, by the FDA’s Vaccines and Related Biological Products Advisory Committee comes as the Biden administration works to ramp up the supply of vaccine doses and get Americans vaccinated as quickly as possible. U.S. health officials are growing concerned about new, emerging variants of the virus, particularly the B.1.351 strain from South Africa, which has …
