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…

MRNA vaccines, like Pfizer and Moderna, could provide protection from coronavirus for years, according to a promising study published in the journal Nature. LEARN MORE: 15-year-old who wanted to go to law school dies of COVID-19: SUBSCRIBE to GMA’s YouTube…