Two injections are needed to ensure the vaccine is successful

Vaccination clinics will be held at both of the city's universities to target the 16 to 25-year-olds who may not have had the jabs.

There have been a number of recent outbreaks of the disease in the city.

Mumps is a viral infection which causes the saliva glands to swell painfully, and can lead to other complications.

Two separate MMR (Measles, Mumps and Rubella) jabs are needed to ensure the vaccine is effective.

Further vaccination clinics will be held at schools and colleges across the region in the next three months.

Dr Alison Frater, director of public health for the local primary care trusts, said: "We are currently facing a surge in mumps clusters around Bristol.

"Some people think mumps is a mild childhood illness, but in fact it can be very serious for adults, possibly causing deafness and viral meningitis."