LONDON: Britain’s Prince William on Wednesday visited the Oxford-based scientists who are working to develop a viable vaccine for COVID-19 as well as trial participants who are helping to determine whether or not it works. The vaccine, originally known as ChAdOx1 nCoV-19, was originally developed by scientists at the University of Oxford, and they are now working with AstraZeneca on development and production. It is already in human trials, with preliminary trials on pigs and monkeys showing some encouraging signs for the experimental vaccine, which is also known as AZD1222, in giving protection against COVID-19, the disease caused by the new coronavirus. William, Queen Elizabeth’s grandson and second-in-line to the throne, met researchers working for the Oxford Vaccine Group, including the vaccine’s developer Sarah Gilbert and the leader of the clinical trial team Andrew Pollard.