People had a better immune response when they received a first dose of AstraZeneca or Pfizer-BioNTech shots followed by Moderna nine weeks late, found an Oxford University study in The Lancet. “We found a really good immune response across the board…, in fact, higher than the threshold set by Oxford-AstraZeneca vaccine’s two doses,” Matthew Snape, the … Continue reading Mixing COVID-19 vaccinations gives better immune response — Oxford trial