0:36 Coronavirus or Influenza? 1:05 The Stats 1:40 RNA Viruses 2:10 The Virion Structure 3:19 Symptoms and Incubation period 4:09 Is it Coronavirus or Influenza? 4:23 Pathogens and the immune system 6:05 The Immune system 6:30 Children 9:00 Vaccines AdultschildrenCoronaviruscoronavirus immune systemCOVID-19COVID19fluimmune systemIMMUNITYSeasonvideoVITAMINvlogYouTubeRelated 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