caucasian researcher using microscope in laboratory with overlay of dna strain and drug capsule of coronavirus covid 19 antiviral

2019ncov anti antiflu antiviral background capsule caucasian cdc china clinic corona coronavirus covid covid19 cure disease dna doctor dose drug epidemic flu global health hospital immune immunization infected infection lab laboratory mask medical medication medicine microscope outbreak overlay pandemic patient pharmacology pneumonia prevention protection quarantine research researcher scientist strain symptoms treatment using vaccine virus white