John Mellors, M.D., chief of infectious diseases, UPMC and the University of Pittsburgh, discusses a scientific breakthrough that is a major step toward a potential drug to treat and prevent COVID-19.Credit: UPMC AnimalAntibodyCOMPONENTCoronavirusCOVID-19COVID19drugeffectiveHIGHLYimmune systemIMMUNITYsarscov2studiesTinyvideoVITAMINvitamin covid19vlogYouTubeRelated Posts Did Your Allergies Get Worse After COVID? Watch This February 26, 2026 There may be a universal vaccine in the future. #science #vaccine #doctor February 21, 2026 The Immune Shift No One Explains After COVID February 19, 2026 Doctor Reacts: Covid masks in 2026?! February 19, 2026 ‘Particularly capricious’: Doctor weighs in on undermining of mRNA technology February 15, 2026 COVID’s Hidden Impact: Immune System Triggers Explained #shorts January 30, 2026