Vincent travels to the University of Texas in Austin to speak with speak with Jason McLellan about his career and his research on the SARS-CoV-2 spike protein, including the effect of adding two proline residues, its effect on other viral spike glycoproteins, and general approaches to vaccine design.

TWiV reviews the genetic characterization of a new strain of type 2 oral polio vaccine and its implications for eradication, and how a polymorphism in humans comprising a single amino acid change in an antibody molecule regulates vaccine elicitation of broadly neutralizing antibodies against influenza virus HA.