little asian child boy wearing short-sleeve shirt with bandage plaster on her arm after vaccination for boost immunity. injection

boy kids isolated injection immunity flu influenza medical immunization virus medicine concept health healthy disease care children hospital smile vaccina background hand arm inoculation happy covid19 immune bandage plaster person mask adult teenager vaccinating medication coronavirus vaccine prevention rollout clinic patient vaccination needle shoulder teens protection patch infection injecting illness little asian child wearing short-sleeve shirt boost covid tetanus healthcare immunity children