Spanish study finds AstraZeneca vaccine followed by Pfizer dose is safe and effective
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- Spain
A Spanish study on mixing COVID-19 vaccines has found that giving a dose of Pfizer's drug to people who already received the first shot of AstraZeneca vaccine is highly safe and effective, the researchers said on Tuesday.
The so-called Combivacs study, run by Spain's state-backed Carlos III Health Institute, found the immune response in people who received a Pfizer shot was between 30 and 40 times greater than in a control group who only had AstraZeneca dose.
Few serious side effects were reported among the 600 participants, the authors said.
(This story has not been edited by Devdiscourse staff and is auto-generated from a syndicated feed.)
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