Mixing Pfizer and AstraZeneca COVID-19 vaccines increases mild side effects but is safe, study shows

Mixing Pfizer and AstraZeneca COVID-19 vaccines increases mild side effects but is safe, study shows
·3 min read

Mixing doses of COVID-19 vaccines increases the risk of mild to moderate side effects when compared with administering two shots of the same vaccine, according to a U.K. trial.

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