Why Will It Take Such a Long Time to Develop a COVID-19 Vaccine?

The question on top of everyone’s mind is: When will the novel coronavirus vaccine be ready? The answer we hear consistently from the experts is that it will take at least 12-18 months and that is if we are lucky. But researchers have already developed several early vaccine candidates, no? Yes, they have, but more challenges will need to be overcome before a vaccine is available. Read on to find out what they are.