MMR contains three separate vaccines in one injection. Each vaccine can have different side effects that happen at different times:
• About one week to 10 days after the MMR injection, some children get a very mild form of measles. This includes a rash, high temperature, loss of appetite and general feeling of being unwell for about two or three days.
• About three to four weeks after the MMR injection, one in 50 children develops a mild form of mumps. This includes swelling of the glands in the cheek, neck or under the jaw. It lasts for a day or two.
• One to three weeks after receiving the rubella vaccine, some adult women experience painful, stiff or swollen joints, which lasts around three days.
Rare