A coronavirus vaccine will not be available before the end of the year, a a World Health Organisation (WHO) expert has said.
There were hopes in Britain that a Covid-19 vaccine being developed by researchers at the University of Oxford could be ready by Christmas as the disease continues to ravage countries such as the US, Mexico and Russia.
Mike Ryan, head of WHO's emergencies programme, said researchers are making "good progress" in developing vaccines against the virus, and a handful are in late-stage trials.
But their first use cannot be expected until early 2021, the expert said as daily new cases around the globe are at near-record levels.