The other 2 arteries that bring blood to the brain, called the vertebral arteries, supply the brainstem. Plaque in the vertebral arteries is much less likely to break off and cause a stroke, but narrowing in the vertebral arteries can cause problems if the brainstem does not get enough blood flow.
A child should receive the first shot when he is between 12-15 months, and the second when he's between 4-6 years of age. If you're not sure if you have had the diseases or the vaccines (prior to 1971 it was given in three separate shots), you can get the MMR vaccine as an adult.
Every fall, millions of U.S. children get flu vaccinations at their pediatricians' offices. The CDC recommends an annual flu vaccine for all Americans who are at least 6 months old. You may have questions about the vaccination. Why can't last year's flu shot protect your child this year? Do you need to get her a separate vaccine for protection against the H1N1 strain?