Some might be straight out denying. Others see how the facts we are told about what is healthy have been wrong so many times we don't want to just believe any old crap being spread about by companies that make money from it. Eating fat will make you fat, eggs are bad for you, carbs are good, partially hydrogenated vegetable oil is the best thing ever invented for your health. Take antibiotics for everything, we don't have any gut bacteria or anything that is important for our health, and antibiotic resistant strains are not a concern. Well all these decades of taking their advice has led people down the wrong path and masses of people are sick and fat because of it.
This measles scare is just that, a scare. 50 something cases this year, 650 cases last year. I didn't hear about them. Measles is not a bad disease, our parents got it as a routine thing during their childhood. Very few turn serious or deadly, especially when you have modern medical care such as antibiotics. I have heard recently even the MMR is found to be not that long lasting and they are probably going to ask people to get it a third time. Plus, each time you get a vaccine they are less and less effective. People who get the flu vaccine each year are going to be in trouble when they are elderly and really need the extra protection if that is true.
It's like the chicken pox vaccine, which in a couple of generations will be just as scary as measles is purported to be. So they get everyone taking a vaccine for it, which runs out so you have to keep getting it. Or you just get chicken pox and get better. Then when you are elderly you get the vaccine for shingles. So you either take a vaccine your whole life, or just get it when you are old and your immune system is weaker. I'll opt for less crap being injected into my body, thanks! Besides, not getting sickness just keeps your immune system weak and screwed up. Some people have been cured of auto-immune diseases by getting a tape worm. If your immune system doesn't learn what it should be fighting, it will start fighting everything, even stuff it should not be.