The World Health Organisation's chief scientist has advised people not to mix and match COVID-19 vaccines from different manufacturers, calling it a "dangerous trend" as there's little data 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."
Earthquakes hit the Red Sea, near Saudi Arabia and Sudan
Russia's Lavrov says US-South Korea nuclear guideline adds concern
WHO to send one million polio vaccines to Gaza to protect children
'El Mayo', alleged Mexican kingpin, pleads not guilty to US charges
Trump doctor disputes suggestion that shrapnel, not bullet, hit his ear
