You can easily get waivers for vaccinations for medical reasons or for religious reasons.
Speaking of whooping cough, there is an increase in it in the United States thanks to illegal immigration and people not getting vaccines.
My daughters would likely die if they got whooping cough. However, the DPT shot could also cause problems with kids with neurological problems which one of my daughters also had. We gave her a DPaT shot instead. Now most of the DPT are the DPaT shot and it has been shown to be much safer.
We also had a friend whose daughter died of complications from the DPT shot.
Parents really should become more aware of the risks vs benefits of shots and make educated decisions about vaccines.
This year I took the flu shot for the first time in my life. I never felt the need for it before. I developed some bad Asthma problems over the summer from mold exposure and it set off the problems. I've had a life long sinus allergy history. I took allergy shots as a kid. Had I been diagnosed early enough as a kid and gotten the shots I may have not be on disability now. The allergies over time severly damaged my sensory interpitation system mainly the Inner Ear portion. Allergies in the 50's & 60's were not that well understood though. By the time I started the allergy shots in the early 70's the damage was already done.
My wife is in worse health than me due to quadriplegia. She does not take a flu shot and the doctor doesn't push it. She is likely a Polio Relapse Syndrome patient with a diagnoses of Transverse Myelitis. The Polio probability showed up in her rehab process when they did limb measurements on her.
Was it a mild undetected case of Polio or the vaccine she's she took? Our generation got two differing doses of it one an injection the other was the sugar cube. No doubt the Polio vaccine save many lives. Reality also is though many lives were harmed as well from them.