Preliminary data suggests mixing COVID-19 vaccine increases reactogenicity

Seven days in medicine: 5-11 May 2021
13 May 2021
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13 May 2021

Preliminary data suggests mixing COVID-19 vaccine increases reactogenicity

Researchers running the University of Oxford-led Com-COV study—launched earlier this year to investigate alternating doses of the Oxford-AstraZeneca vaccine and the Pfizer vaccine—have today reported preliminary data revealing more frequent mild to moderate reactions in mixed schedules compared to standard schedules.

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