MMR

Measles

Measles virus causes symptoms that can include fever, cough, runny nose, and red, watery eyes, commonly followed by a rash that covers the whole body.
Measles can lead to ear infections, diarrhea, and infection of the lungs (pneumonia). Rarely, measles can cause brain damage or death.

Mumps

Mumps virus causes fever, headache, muscle aches, tiredness, loss of appetite, and swollen and tender salivary glands under the ears on one or both sides.
Mumps can lead to deafness, swelling of the brain and/or spinal cord covering (encephalitis or meningitis), painful swelling of the testicles or ovaries, and, very rarely, death.

Rubella (also known as German Measles)

Rubella virus causes fever, sore throat, rash, headache, and eye irritation.
Rubella can cause arthritis in up to half of teenage and adult women.
If a woman gets rubella while she is pregnant, she could have a miscarriage or her baby could be born with serious birth defects.

These diseases can easily spread from person to person. Measles doesn’t even require personal contact. You can get measles by entering a room that a person with measles left up to 2 hours before.

Combined live vaccine for measles, mumps and rubella (MMR) is used widely for the immunization of children in certain regions of the world because of its advantages over the individual vaccines

Measles, mumps, and rubella (MMR) vaccine.

Minimum age: 12 months for routine vaccination)
Routine vaccination:

2-dose series at 12–15 months and 4–6 years
The 2nd dose may be given as early as 4 weeks after the 1st dose.

Catch-up vaccination:
Unvaccinated children and adolescents: 2 doses at least 4 weeks apart.

Adult may have MMR Vaccination. Many adults 18 years of age and older might be susceptible to measles, mumps, and rubella without knowing it.