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.
The MMR vaccine protects children against measles, mumps, and rubella. These are dangerous, even deadly diseases. Before the vaccine was approved in 1963, almost everyone got measles by the age of 18. In Canada, there were about 300,000 cases of measles every year.Since the vaccine, that number has fallen to less than 20 cases a year. Children should get the MMR shot twice to have ongoing protection from infection. Provinces vary on the timing for the second shot. 1  The first shot is given at 12 months of age.n Canada, there were about 300,000 cases of measles every year. Since the vaccine, that number has fallen to less than 20 cases a year. Children should get the MMR shot twice to have ongoing protection from infection. Provinces vary on the timing for the second shot. 1  The first shot is given at 12 months of age.