A single dose of the Pfizer or AstraZeneca vaccine was effective at stopping 62% of coronavirus infections in care homes, a study has found.
The UK and the European Union have said they are working together to improve their relationship, after weeks of tensions over Covid vaccine supplies.
A new "double mutant" variant of the coronavirus has been detected from samples collected in India.
The European Union has warned it could ban exports of vaccines produced there, as it struggles to speed up its vaccination rollout.
Results from the long-awaited US trial of the Oxford-AstraZeneca Covid vaccine are out and confirm that the shot is both safe and highly effective.
The Indian city of Mumbai is to roll out mandatory coronavirus tests in crowded places as the country grapples with a rise in infections.
The disruption in healthcare services caused by Covid-19 may have led to an estimated 239,000 maternal and child deaths in South Asia, according to a new UN report.
UK experts say there will be a big increase in the number of people being offered Covid vaccinations in the coming days.
Health systems in most of Brazil's largest cities are close to collapse because of Covid-19 cases, its leading health institute warns.
Unlocking too quickly would lead to a substantial surge in Covid infections, the UK's chief medical adviser says.
