Coronavirus Update 127: Delta Variant and Vaccines

Professor Roger Seheult, MD of MedCram with an update on the effectiveness of four major vaccines against the delta variant of COVID-19: Pfizer / BioNTech, Moderna, AstraZeneca, and Johnson and Johnson Vaccine (This video was recorded on July 19, 2021). See the video Dr. Seheult references: 10 Tips if you Get COVID-19 here: Please see our most recent video on Previous Infection vs. The Delta Variant: