Daniel Griffin provides a clinical report on COVID-19, including vaccines, Alan summarizes a vaccine webinar on the most advanced US trials, a nidovirus from snapping turtles, longevity of memory B cells in recovered patients, and listener email.

Daniel Griffin provides his weekly update on the COVID-19 clinical situation, followed by our discussion of tests of an inactivated vaccine, results of serological surveys, an inhibitor of the cell protease needed for virus entry, and answers to listener questions.

Lynda Coughlan joins the weekly virtual bus companions for a discussion of a host defense peptide from frogs that destroys influenza virus, and mouse models for acute and chronic hepacivirus infection.