Health officials are urging people to have both parts of the MMR vaccine after cases of mumps in England reached their highest level in a decade.
Outbreaks in universities and colleges raised the number of cases of the painful viral illness to 5,042 in 2019 – four times the number in 2018.
Most were in young adults who missed out on the MMR jab.
Public Health England said the full two doses of the vaccination were needed to maximise protection.
The vaccine prevents most cases of mumps – but not all, and so some young people are still getting the illness.
What is mumps?
It is a viral infection that used to be very common in children before the