TWiV explains why hydroxychloroquine failed in humans despite showing antiviral effects in cells, and reviews the published data on the Pfizer/BioNTech mRNA vaccine.

TWiV covers trials of hydroxychloroquine and convalescent plasma therapy for COVID-19, and answers listener questions on blood tests for antibodies, cross-protection among coronaviruses, acquiring infection from food or the gas pump, face masks containing copper, and much more.