They are quite right, of course, there will be a huge volume of adverse reactions to record from whichever one of the vaccines makes it to the bloodstreams of the public first.
If a vaccine is given the go ahead for mass immunisation, it will be essentially an untested vaccine. Safety trials have only had about 3 to 4 months of data to analyse, anything beyond this point is unchartered territory.
I strongly urge everyone to look into this vaccine, or at the very least use your common sense.
Just a few months for safety trials, no manufacturer liability, and the fact that this is an entirely new Vaccine technology should make you, at the very least, a little concerned.
A Company called Genpact won the contract to develop the AI software for the UK Government.