More than 4.4 billion doses of coronavirus vaccines have been administered, in over 190 countries worldwide.
A baby thought to be the world's smallest at birth has been discharged from a Singapore hospital after 13 months of intensive treatment.
The number of people waiting for heart surgery in England could rise by more than 40% by next spring, a charity has warned.
UK experts are set to recommend all 16 and 17-year-olds should be offered a Covid vaccine, the BBC has been told.
The World Health Organization (WHO) has called for a suspension on booster vaccines for Covid-19 until at least the end of September.
Children who become ill with coronavirus rarely experience long-term symptoms, with most recovering in less than a week, research suggests.
A Covid outbreak first discovered in the Chinese city of Nanjing has spread to five provinces and Beijing, with state media calling it the most extensive contagion after Wuhan.
India's government is promising to vaccinate the entire adult population by the end of 2021, but questions remain over whether it will have enough doses.
About one in three middle-aged people has multiple chronic health issues, a long-running British study suggests.
The Delta variant of Covid-19 has now been detected in 124 territories worldwide, the World Health Organization (WHO) says.
