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."
Trump says US and Tehran having 'good talks'
Israel to allow international force into Gaza, Israeli official says
Saudi Arabia reaffirms right to defend its security against drone attacks
UK's Burnham welcomes Zelenskyy as first foreign visitor
Philippines' Marcos puts anti-graft campaign at centre of address to Congress
