MMR Vaccine for Adults
What are the risks and side effects of the MMR vaccine?
For most adults, the benefits of the MMR vaccine outweigh the relatively rare risks. A few people develop a short-term mild rash, fever, swollen glands, or pain and stiffness in the joints after being vaccinated. More serious, and more rare, side effects include a temporary low blood platelet count or serious allergic reaction. Call your doctor if you have difficulty breathing, dizziness, rapid heart beat, hives, weakness, or other unusual signs after vaccination.