a single bottle vial of covid-19 vaccine. medical concept vaccination hypodermic injection treatment. vaccine and syringe injectio

single bottle vial covid19 vaccine medical concept vaccination hypodermic injection treatment syringe injectio coronavirus virus covid health illness medicine disease pandemic science flu epidemic corona protection doctor ncov infection hospital outbreak research care pneumonia global background china sars laboratory infectious immunization drug death cure medication microbiology wuhan needle therapy prevention biology fever