Every action has concomitant risks.
In this case the action of vaccination and the action of avoiding vaccination. I looked into it and am convinced the risks of vaccinating are orders of magnitude less than the risks of not vaccinating my kids. If you care about math, you will get you & yours vaccinated early & often.
So, we make sure our kiddos have every childhood vaccine that comes down the pike. My wife gets the usual adult vacs, plus more because she works at a hospital. I had beau coup vacs in the service, due to the environments we were likely to visit(1). I am looking to renew all those & more because of #1 below.
1. Lots of foreigners coming to the USA these days, many carrying diseases we usually do not face in America. We are less than 24hours from Africa, the Hemorrhagic Fever Stewpot of the world. Some of these folks comply with regs and get their required shots. Some pay $$$ and lie about their vacs. Some come here illegally and cough on everyone they meet. Can you say, "Typhoid Maria?"
2. Whatever you think of the morality homosexual behavior, the biological reality is that a large portion of the homosexual male subculture is one great stimulant-fueled petri dish. And the social reality looks like it is increasing with frequency. Pathogens can (and do) tear though the male homosexual community like wildfire. Bisexuals and black men on the down low dip into that dish upon occasion and bring back more than just memories into their other relationships. Some of those pathogens, like HIV(2), are mercifully weak and have difficulty hopping into the rest of the population. TB, meningitis, and others, are a bit more robust and are more successful in breaking out of that sub-culture.
(1) "Today you are getting vaccinated for yellow fever and plague."
(2) Gotta really work at transmission. IV drug use and anal sex give HIV its best odds of transmission. The other methods reduce the probability of infection to remarkably close to zero.