There's already surveys showing at 20+% of people will refuse to be vaccinated due to fear of vaccines:
23 percent say they won’t get a COVID-19 vaccine - The Boston Globe
Millions of Americans will refuse to get a coronavirus vaccine when it becomes available, polls say
That will only get worse.
Most of the vaccines in development are very new technology and RNA/DNA vaccines have never been used in human vaccinations before. Anti-vaxxers are laughed at, but people refusing to give their kids GMO corn is widely accepted. These are genetically engineered vaccines. Social media is already going crazy with fear tactics about these vaccines.
I really hope some new candidates are moving through development which are more traditional vaccinations because there is going to be some legitimate fear of a vaccine what's brand new, has the "genetically modified" label and is going to have people terrified of side effects.
The Oxford vaccine is giving the control group another vaccine as a placebo and still there are concerns that those who did or didn't get the test vaccine will know they did or didn't because of those who get the vaccines seem to have side effects of
sore arm, fever and headache. So, this isn't a vaccine that you get and you're fine. Just like people claim to get the flu after the flu shot, that vaccine is going to cause a lot of people to have mild symptoms. And exactly how mild needs to be determined by wide scale testing. Social media amplifies those types of claims.