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).…
Mixing and matching COVID-19 vaccines not only generates an immune response, it’s also safe, leading epidemiologist Professor Nancy Baxter says. Subscribe and 🔔: | Get more breaking news at 9News.com.au: Join Nine News for the latest in news and events…