A COVID-19 vaccine is by no means guaranteed, British Prime Minister Boris Johnson has said. At a press conference on Monday night, Mr Johnson referred to the part Britain was playing in looking for a valid COVID-19 vaccine, Xinhua reported.

Asked by the media, Johnson said he hopes that a vaccine will be developed, but there is no guarantee. "I'm hearing some very encouraging things from what's going on at Oxford (University) to achieve a vaccine. " "What I can tell you is that the UK is at the forefront of concerting international activity to try to deliver a vaccine," said Johnson. The government's Chief Scientific Adviser Patrick Vallance said the chances of developing a vaccine for the disease is getting higher.

But he also agreed with Johnson's comment that it was not guaranteed.