Parents are being encouraged to make sure their children are up to date on their vaccinations.
Kernow Health CIC, responsible for delivering school-age immunisations for the NHS, has launched a campaign for half term that explains which immunisations are available to young people.
The organisation offers the nasal flu vaccine, the human papillomavirus (HPV) vaccine for boys and girls, the tetanus/diphtheria/polio vaccine, meningitis ACWY and catch-up vaccinations for measles, mumps and rubella.
Michele Boyce, a clinical manager for the Cornwall and Devon School Age Immunisation Service, said: "It's never too late to have any vaccine if you have missed any of them."