school children with protection masks against flu virus at lesson in classroom

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bacteria book boy caucasian children classroom concentrated cute danger defense desk diligently education elementary epidemic face flu girls group health-care illness infection influenza intelligence kids learning lesson mask medical pandemic people period plague preventive primary protection protective pupils quarantine reading safety sars school student studying symptom teacher testing virus woman
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  • Published on Nov 09, 2022
  • Photo type JPG
  • Category People