Some people are just contrary for the sake of it. That is what I call being privileged & even self-indulgent . Most will have had the necessary vaccinations, as too their parents.
Innumerable people have died, for lack of treatment and a vaccine. Their families have been torn apart, all over the world.
But, these same nay-sayers/anti vaxxers/lockdowners - are happy to say no, no, no - will still expect the NHS and their staff to save them and their kin from any health, whenever health problem/accident they may have. Now think opting out of using a drug that will help not just them, but their families and communities; is the best way forward to overcome the worst pandemic in our lifetime?
There is a chance to prevent further transmission, the research scientists and pharmacologists involved in developing drugs do this all year round, yes the trials have been speeded up, they have worked round the clock - because people/families/communities are dying all over the world. You might even know someone who has been affected directly. I do.
They did the same for Ebola. The vaccine for Covid-19 is probably a derivative of that for SARs, as they are all-related.
Sorry, went off track a bit. In my late teens, I found I had no immunity to TB. I was at university, but couldn't be bothered to go back for the vaccination (scared of needles). 2 years later, I thought I just had severe asthma, and but couldn't keep any weight on. A doctor diagnosed Tuberculosis. 9 months of bloody treatment, cos' I couldn't be bothered, and didn't think I was at risk (in my 20s).
3 months daily injections, I was put in an isolation ward for a month. It was not fun, the meds were nasty, I felt like dying. By the time I made it out of hospital, I looked like a warmed up skeleton, it took months to put on weight.
Take the bloody vaccine, if offered (there are many people in the world who wish they were in your shoes).
If you are seriously worried or have concerns about side effects, speak properly to your GP or specialist who knows your medical history. Don't rely on what is basically malicious & anonymous gossip on how best to protect your health and those around you.
I hate the medicines I have to take, but they keep me alive, for my DFamily, my friends and community. And have done for much longer than I ever expected.