Experts have cautioned that despite the speed of the trials, a vaccine is not imminentA British vaccine is set to undergo human and animal trials simultaneously, beginning next week at Porton Down, as scientists attempt to have it ready for limited use before next winter. The drug, made by a team at Oxford University, is expected to begin testing on animals at the scientific base in Wiltshire, and then human safety trials next month, before the results of the animal trials are known. If the safety trials are successful, it will enter larger scale human trials, known as phase II trials. Normally, even larger phase III trials are needed before a drug is approved for clinical use. However, in emergencies these can be part of a limited early release of the vaccine, often for frontline workers, an approach that

Source: The Times March 21, 2020 00:13 UTC