India has recorded more than 90,000 new cases of Covid-19 in the past 24 hours, taking its total above that of Brazil.
The main test used to diagnose coronavirus is so sensitive it could be picking up fragments of dead virus from old infections, scientists say.
Cheap steroids can save the lives of patients who are critically ill with Covid-19, studies show.
Health officials in Sydney have issued public health alerts after a cluster of coronavirus cases believed to be linked to gyms and clubs in the city.
Parents should be "reassured" Covid-19 has not caused the deaths of any otherwise healthy schoolchildren in the UK, researchers say.
Being obese doubles the risk of hospital treatment from Covid-19 and increases the risk of dying by nearly 50%, a global analysis suggests.
The earliest known person to contract coronavirus within the UK has been identified, scientists believe.
Singing does not produce substantially more respiratory particles than speaking at a similar volume, a study suggests.
Coronavirus tests are to be carried out on more people in the government's monitoring programme to get a better idea of the spread of the virus.
The loss of smell that can accompany coronavirus is unique and different from that experienced by someone with a bad cold or flu, say European researchers who have studied the experiences of patients.
