First Dose Of AstraZeneca-Oxford Or Pfizer-BioNTech COVID-19 Vaccines Followed By Moderna Shot Offers Better Immune Response, Study Suggests

Reuters (12/6, Aripaka, Marks) reports a study by Oxford University “into mixing COVID-19 vaccines has found that people had a better immune response when they received a first dose of AstraZeneca or Pfizer-BioNTech shots followed by Moderna nine weeks la...