white kn95 or n95 mask with antiviral medical mask for protection against coronavirus on black background.

19 2019-ncov bandage blue breath breathing chinese virus clinic corona disease 2019 coronavirus infection cough covid danger doctor epidemic equipment evaporation face ffp2 global pandemic health care hospital ill illness individual influenza kn kn95 mask medic medicine nurse occupation pandemia prevention protection protective quarantine stay at home surgeon surgery surgical uniform