If you lack protection to measles, mumps, or rubella and are exposed to someone infected with one of these illnesses, consult your doctor about obtaining the MMR vaccination. Getting the MMR vaccination after being exposed to measles, mumps, or rubella is not hazardous, and it may help prevent further sickness. People who have not been vaccinated and are exposed to measles, mumps, or rubella should follow up with a single dose of MMR vaccine within 28 days to be protected. The following conditions can occur if you do not receive two doses of the MMR vaccine: • You could develop measles if you are exposed to the virus. • You could develop mumps if you are exposed to the virus. • You could develop rubella if you are exposed to the virus. These diseases can be serious or even lead to death if left untreated. Therefore, it is important that you get vaccinated against them. The MMR vaccine is safe and effective. It has very few side effects and is recommended for everyone between the ages of 12 months and 25 years. The best time to get vaccinated against measles, mumps, and rubella is before you go abroad. However, if you travel and plan on staying in countries where these diseases are prevalent, make sure you get vaccinated during your stay.