When they decided not to vaccinate their son against measles, two San Diego parents thought they were making the best decision for their child. But when the 7-year-old came home from an overseas trip suffering from the disease (pictured at left: measles virus), his family’s personal decision became a whole community’s problem. The resulting outbreak infected 11 children and endangered many others.
I know that anecdote is not the singular of data but there are plenty of real studies to back up the assertion that a lack of vaccination is harmful to our species. Get your flu shots and keep up with the vaccination schedules your doctor (and your child's doctor) recommend. They don't cause autism.