FDA OKs mixing COVID vaccines; backs Moderna, J&J boosters

U.S. regulators on Wednesday signed off on extending COVID-19 boosters to Americans who got the Moderna or Johnson & Johnson vaccine and said anyone eligible for an extra dose can get a brand different from the one they received initially.

source https://medicalxpress.com/news/2021-10-fda-oks-covid-vaccines-moderna.html