'Why I chose to give my daughter the MMR jab' - Read Charlotte's story by clicking here.
MMR is a safe and effective combined vaccine that protects against 3 separate illnesses – measles, mumps and rubella (German measles) – in a single injection. The full course of MMR vaccination requires 2 doses.
They can also lead to complications in pregnancy that affect the unborn baby, and can lead to miscarriage.
Since the MMR vaccine was introduced in 1988, it's rare for children in the UK to develop these serious conditions.
But outbreaks happen and there have been cases of measles in recent years, so it's important to make sure that you and your children are up-to-date with the MMR vaccination.