One of the most unnerving things about this pandemic is that the virus keeps changing. And yet, viruses we’re familiar with don’t spawn vastly more dangerous variants every year. Even flu, while it changes enough to require a new shot, doesn’t usually turn the world upside down. Will SARS-CoV-2 reach some limit on the new variants it can produce? Biologist Jesse Bloom of the Fred Hutchinson Cancer Research Center had studied influenza evolution for years before turning his attention to how SARS-CoV-2 is evolving. We talk about where things might be going, and where the virus might have come from. 




“Follow the Science" is produced, written, and hosted by Faye Flam, with funding by the Society for Professional Journalists. Today’s episode was edited by Seth Gliksman with music by Kyle Imperatore. If you’d like to hear more "Follow the Science," please like, follow, and subscribe!