Results of a human trial of a coronavirus vaccine could be available by the middle of June, an expert has said. Professor Sir John Bell, regius professor of medicine at Oxford University, said "several hundred" people have been vaccinated and the challenge now is to be able to manufacture at scale once it is approved by the regulators.
At the end of April a team of researchers at Oxford started testing a Covid-19 vaccine in human volunteers. Around 1,110 are expected to take part in the trial, half receiving the vaccine candidate and the other half (the control group) receiving a widely available meningitis vaccine.