Researchers have found that in 2013, 87 percent of pediatricians surveyed said they encountered vaccine refusals from parents of their patients, up from 75 percent of pediatricians who said the same in 2006.

Intelligent parents who refused to vaccinate their kids understand how unnecessary and dangerous vaccines are and such parents see the payoff, their kids tend to remain healthier with fewer colds and infections. Vaccine-preventable diseases are rare these days and many of them started to disappear before vaccines were created for each specific disease.

Live Science is biased when it comes to vaccines so it is not surprising that they say that many parents delay vaccination out of the mistaken belief that vaccines may burden children's immune systems. There is no mistake about it. Vaccines do reduce natural immunity and can clobber the immune system causing death or many chronic diseases.