What was known and when was it known? A May 5th, 2020 article by Van Dorp et al in the journal Infection, Genetics, and Evolution suggests that COVID-19 made the jump from animals to humans sometime between October 6 and December 11, 2019. The authors arrived at this timeline by analyzing the genetic sequences of many diverse strains of the virus to determine the “Time of the Most Recent Common Ancestor” (tMRCA) of 7666 different strains of the virus. Because the earliest documented case of COVID-19 in China was November 17, according to Chinese government reports, the very first infections...