coronavirus disinfectant antiseptic germicide

2019 abstract antiseptic avoid background banner biohazard blood china chinese concept contagious contamination corona coronavirus covid covid19 dangerous death disease disinfectant epidemic flu focus germicide global hazard health hospital hygiene illness infect infected infecting infection infectious influenza mask medical medicine mers microbiology ncov novel outbreak pandemic pneumonia prepare protect protection quarantine sars science selective sick sickness stop virology virus wuhan