How much coronavirus transmission comes from people with no symptoms is still a "big unknown", a World Health Organization scientist has clarified.
The high proportion of pregnant women from black and ethnic minority (BAME) groups admitted to hospital with Covid-19 "needs urgent investigation", says a study in the British Medical Journal.
A malaria drug that has been tested as a treatment for coronavirus does not save lives, one of the world's largest trials shows.
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Testing of the malaria drug hydroxychloroquine as a possible treatment for coronavirus has been halted because of safety fears, the World Health Organization (WHO) says.
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A drug treatment called remdesivir that appears to shorten recovery time for people with coronavirus is being made available on the NHS.
UK scientists are to begin testing a treatment that it is hoped could counter the effects of Covid-19 in the most seriously ill patients.
Children and older adults are to be included in the second phase of vaccine trials to protect against coronavirus.
A trial to see whether two anti-malarial drugs could prevent Covid-19 has begun in Brighton and Oxford.
More than 100 healthy babies have been born to mothers infected with the novel coronavirus in one hospital in India's western city of Mumbai.
Up to 30% of patients who are seriously ill with coronavirus are developing dangerous blood clots, according to medical experts.
