The diseases that vaccines protect against can cause severe sickness, handicaps, and even death. In years past, some of these diseases were common. But because of vaccines, most are now rare. Still, if people don't get vaccines, the diseases can become common again.
Vaccines are very safe for most people. There is a very small risk of serious problems. The risk from getting the diseases is far greater than any risk from getting the vaccine.
It's good to know what vaccines you and your children should have, and when. Talk to your doctor. If you have missed any vaccines, it's not too late to catch up!