Covid: Brazil has more than 4,000 deaths in 24 hours for first time
Experts warn new variants coming from Brazil could undermine global efforts to control the pandemic.
Author Archives: BBC News - Health
Covid: Child jabs halted in trial as adult clot link probed
The UK's regulator is to investigate the Oxford-AstraZeneca jab over a possible link with blood clots.
NHS Covid-19 contact tracing app to share QR code venue check-ins
The move should lead to more people being told to get tested for Covid-19.