London: UK scientists said they are immunizing hundreds with coronavirus vaccine after seeing no worrying effects so far.
Dr Robin Shattock, a professor at the college, told the media that he and colleagues had just finished a very slow and arduous process of testing the vaccine at a low dose.
The trial will be expanded up to 300 people, including some over 75 years of age. Dr Shattock said there are no side effect but it was still very early in the study.
But, since COVID-19 infections have dropped dramatically in Britain, it is very difficult to determine whether or not the vaccine works.