COVID-19 Versus The Flu: Similarities/Differences Explained by a John Hopkin’s M.D. This article was reviewed by Lisa Lockerd Maragakis, M.D., M.P.H., and originally appeared on hopkinsmedicine.org Influenza (the flu) and COVID-19, the illness caused by the coronavirusย that’s led to the current pandemic, are both infectious respiratory illnesses. Although the symptoms of COVID-19 and the flu can look similar, the two illnesses are caused by different viruses. Lisa Maragakis, M.D., M.P.H., senior […] Brains The Brains | August 4, 2020 1 Comment