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.
This will help protect your baby in the first few vulnerable weeks of its life until he or she is old enough to have the vaccine at two months of age. Babies are offered whooping cough vaccination at 2, 3 and 4 months of age as part of their routine immunisations. weeks 28 and 32. If you are already 28 weeks pregnant or over you can have your vaccination at your next routine visit or make an appointment with your GP if you wish to have it sooner. As there is no whooping cough-only vaccine, the vaccine you will be offered also protects against polio, diphtheria and tetanus.