U.K. study reports mixing AstraZeneca, Pfizer vaccines produces better immunity

U.K. study reports mixing AstraZeneca, Pfizer vaccines produces better immunity

CP24

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A vaccine study in the United Kingdom reports that getting a dose of the Pfizer-BioNTech vaccine four weeks after a dose of Oxford-AstraZeneca produced a much stronger immune response than two doses of AstraZeneca.

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