22 August 2020 – BBC News
The first phase of the University of Oxford vaccine trial began in April, involving 1,000 healthy adults aged 55 and under. This will now extend to children and older adults during the second phase of trials.
Now more than 10,200 people – including over 70s and five to 12-year-olds – will be enrolled in the study, to see the effects on their immune system.
Trials of the same vaccine on monkeys appear to have given them some protection against the disease.