Woman doctor in protective mask and face shield is injecting vaccine into shoulder of aged man who sitting on sofa at home

illness prevention vaccination covid-19 vaccine immune system heathcare infectious disease protective face mask coronavirus illness patient doctor quarantine injecting senior adult virus face shield men prevention care syringe retirement nurse medicine human joint pandemic assistance shoulder 4k caucasian dose females women mexican ethnicity adult hand people global glove sofa young adult lifestyles indoors apartment sitting covid-19 spanish and portuguese ethnicity senior women senior men uniform ukraine residential building