medical masks of white color on yelliw background for protection against flu and other diseases. surgical protective mask. medical

2019ncov background bandage breath breathing care china chinese clinic color coronaviridae coronavirus cough covid covid19 danger disease diseases doctor epidemic equipment face flu health healthcare hospital ill illness individual infection influenza isolated letovirinae mask masks medic medical medicine nurse other outbreak pandemic pneumonia prevention protection protective respiratory science sick spread surgery surgical uniform virus white yelliw yellow