contagious sign

abstract area art background bacterial biohazard catching caution clip clipart computer contagious corona coronavirus covid covid19 danger design diphtheria disease flat flu germ graphic graphics gut hazard highly icon icons illness illustration infected infection infectious influenza isolated lab logo logos monkey monkeypox mould pandemic people pictogram pox quarantine respiratory restricted rhinovirus salmonella sars sign signs smallpox stamp stamps stomach stop symbol symbols transmission vector viral virus warning web white zone