Parents and carers are being urged to make sure their children are vaccinated against the potentially-fatal measles bug.
A vaccination programme has been launched after measles cases rose to an 18-year high nationally.
Wakefield Council and district NHS bosses are encouraging families to take up the Mumps, Measles and Rubella (MMR) jabs to halt the spread of the illness.
The programme, which is being run through GP surgeries, aims to protect unvaccinated and partially-vaccinated 10-16-year-olds against measles by the start of the next school year.
Dr Andrew Furber, the district’s director of public health, said youngsters who were not vaccinated should have at least one dose of MMR, which would give then 95 per cent protection against measles.
He said: “A second dose is then needed to provide almost complete protection.
“Measles is a highly infectious and potentially fatal disease and unvaccinated children are at risk when it gets into the community.
“Although the number of confirmed cases in our area remains low, it is important that we do our utmost to prevent further cases.”
People can arrange MMR vaccines by contacting their GP surgery as part of the programme, which is open to anybody aged up to 25.