US regulators have approved emergency use of an experimental drug that appears to help some coronavirus patients recover faster.
It is the first drug shown to help fight Covid-19, which has killed more than 230,000 people worldwide.
The Food and Drug Administration acted after preliminary results from a government-sponsored study showed Gilead Sciences's remdesivir shortened the time to recovery by 31%, or about four days on average, for hospitalised Covid-19 patients.
