The World Health Organization’s chief scientist on Monday advised people not to mix and match Covid-19 vaccines from different manufacturers, calling it a “dangerous trend” since there was little data available about the health impact.
“It’s a little bit of a dangerous trend here. We are in a data-free, evidence-free zone as far as mix and match,” Soumya Swaminathan told an online briefing.
“It will be a chaotic situation in countries if citizens start deciding when and who will be taking a second, a third and a fourth dose.”
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The advice came after a study conducted in the United Kingdom earlier found that adopting a mix-and-match approach to Covid-19 vaccines gives a more robust immune response.
