novel coronavirus - 2019-ncov, wuhan virus concept. surgical mask protective mask with coronavirus text. chinese coronavirus covid

2019ncov 2020 airborne allergen avifavir bacteria biohazard china chinese concept contagion coronaviridae coronavirus covid covid19 danger dangerous disease doctor epidemic face fever flu health hospital illness infection market mask medical medicine mers novel outbreak pneumonia quarantine respiratory risk sars sarscov2 science seafood sick sti1499 surgical syndrome syringe vaccine virus wuhan