Measles is a viral infection that can cause rash, cough, runny nose, eye irritation, and fever. It can lead to ear infection, pneumonia, seizures, brain damage, and death.

Mumps is a viral infection that can result in fever, headache, muscle pain, loss of appetite, and swollen glands. It can lead to deafness, infection of the brain and spinal cord covering, painful swelling of the testicles or ovaries, and sterility.

Rubella is a viral infection that can can result in a rash, mild fever, or arthritis. Pregnant women who have rubella are at increased risk for miscarriage. Their babies may be born with severe birth defects.

The measles, mumps, rubella (MMR) vaccine consists of 3 live viruses made in chicken embryo cells. The viruses found in the vaccine have been made harmless during the manufacturing process.

The vaccine is given under the skin.