As Fifi the llama munches on grass on a pasture in Reading, her immune system has provided the template for a coronavirus treatment breakthrough.
Florida has registered a state record of 15,299 new coronavirus cases in 24 hours - around a quarter of all of the United States' daily infections.
Australia's second-largest city has begun a second lockdown in response to a spike in new coronavirus infections.
A BBC investigation has found that two life-saving drugs used to treat Covid-19 patients in India - remdesivir and tocilizumab - are in short supply and being sold for excessive rates on a thriving black market. Vikas Pandey reports from the capital Delhi.
The World Health Organization has acknowledged there is emerging evidence that the coronavirus can be spread by tiny particles suspended in the air.
Zoonotic diseases - which jump from animals to humans - are increasing and will continue to do so without action to protect wildlife and preserve the environment, UN experts have warned.
The US is buying nearly all the next three months' projected production of Covid-19 treatment remdesivir from US manufacturer Gilead.
Stroke, delirium, anxiety, confusion, fatigue - the list goes on. If you think Covid-19 is just a respiratory disease, think again.
People testing negative for coronavirus antibodies may still have some immunity, a study has suggested.
Trials of the controversial anti-malarial drug taken by US President Donald Trump to try to prevent catching coronavirus are to be resumed.
