Immune response of AstraZeneca shot boosted by mixing dose schedule with Pfizer – study

Reading Time: < 1 minute

LONDON (Reuters) – A mixed schedule of vaccines where a shot of Pfizer’s COVID-19 vaccine is given four weeks after a AstraZeneca shot will produce better immune responses than giving another dose of the AstraZeneca shot, an Oxford study said on Monday.

The study, called Com-COV, compared mixed two-dose schedules of Pfizer and AstraZeneca vaccines, and found that in any combination, they produced high concentrations of antibodies against the coronavirus spike protein.

(Reporting by Alistair Smout; editing by Michael Holden)