Covid, China says yes to the aerosol vaccine: it is the first in the world

China says yes to the inhalable vaccine against Covid. It is the first approved in the world and will be administered with a nebulizer. The serum was produced by CanSino Biologics, of Tianjin and, according to the same company, the National Medical Products Administration has given the green light to use the antidote as a booster for emergency use.