Don't miss a thing by getting the day's biggest stories sent direct to your inbox Adults are more likely to report mild to moderate side effects after mixing coronavirus vaccines for their first and second dose, preliminary data suggests.
The Com-Cov study, launched in February, investigates alternating doses of the Oxford/AstraZeneca and Pfizer Covid-19 jabs - with either being given as the first dose, then the other as the second.
Researchers report that, when given at a four-week interval, both of the mixed schedules, Pfizer/BioNTech followed by Oxford/AstraZeneca, and Oxford/AstraZeneca followed by Pfizer/BioNTech, induced more frequent reactions following the second dose than the standard schedule of giving two of the same vaccine.
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