“Is there a possibility that a successful vaccine candidate will come about within the next six months? The answer is definitely, ‘Yes’. However, I think people just have to be cautious as there have been so many mutations of the coronavirus. So, will we have an actual successful vaccine candidate that will work on all mutations? That’s a big question mark,” he concedes.

Health experts in the US have also hinted that it could take two injections or possibly more to cater to the different mutati