Substack by Dr. T. Ryan Gregory, professor in the Department of Integrative Biology at the University of Guelph in Ontario, Canada, and Dr. Arijit Chakravarty, CEO of Fractal Therapeutics. Both have been studying and writing about SARS-CoV-2 viral evolution and the impact on public health over the course of the pandemic. They discuss in this blog "how viral evolution works, why people keep getting it wrong, what to expect next from the pandemic and how to stay ahead of the virus."