Immune response may vary with choice of COVID-19 booster
(HealthDay)—Immune response may vary with the choice of COVID-19 vaccine used for a third dose or booster following two doses of ChAdOx1 nCoV-19 (ChAd) or Pfizer BioNTech BNT162b2 (BNT), according to a study published online Dec. 2 in The Lancet.