A certain piece of popular mythology about viral evolution seems to be unkillable: that it is the nature of viruses to, over time, evolve to be less pathogenic and more contagious. The reasoning, the less...

The Omicron variant of SARS-CoV-2, or Coronavirus-19, had its first confirmed case in the United States on December 1, 2021. It was initially identified in the world on November 11th in Botswana and November...