The US Centers for Disease Control and Prevention signed off on adding Johnson & Johnson’s newly authorized Covid-19 Vaccine to the arsenal of preventive weapons against the coronavirus.CDC Director Rochelle P.Walensky gave the go-ahead after a panel of advisors voted in support of adults in the US getting one-dose vaccine. The Advisory Committee on Immunization Practices voted 12-0 in favor with one recusal. The US Food and Drug Administration authorized the use of a single-dose shot on Saturday based on its 66% effectiveness at preventing moderate to critical coronavirus disease in a in-depth study that also indicated that it was safe. J&J said after the FDA clearance that it had started to ship doses of its vaccine for allocation and distribution by the federal government. The doses are expected to start reaching vaccine providers in the US in the coming days, with vaccinations starting soon afterward.