TWiV reviews the vials labeled smallpox that were not, re-emergence of enterovirus D68 in Europe, efficacy of inactivated SARS-CoV-2 vaccine, and cellular correlates of protection for an oral influenza virus vaccine.

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.