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Vaccines are fine, It's the digital vaccine passports that are far more concerning for the Stasi/gestapo like monitoring it enables if you gotta scan that shit everywhere you go. At least you can leave your phone at home, that shit is insidious.
If you need reassurance for the Vaccine itself, many similar to your age and health nurses, doctors, etc across the globe are all already vaccinated. By the time you, probably healthy normal 18-34 year old qualify to even get the vaccine they'll have been vaccinated for at least a year. If they're still alive, functional and having babies by then, that's that.