Roger Seheult, MD of MedCram explains how “natural immunity” (from a previous COVID-19 infection) compares with vaccines (Pfizer, Moderna, AstraZeneca) VS. the Delta coronavirus variant. (This video was recorded on July 24, 2021). Correction: Strasbourg is in France (near the…

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).…