Nikki Turner, principal medical adviser at the Immunisation Advisory Centre, said students sitting NCEA exams should check their vaccination status as overseas outbreaks increase the risk of the virus being brought into New Zealand.
"Many young people may be unsure of their vaccination history, but it is safe and recommended to be vaccinated if there is any doubt," Turner said.
Last November, measles cases were reported among students from Wellington College, Wellington Girls' College and Auckland Grammar, with some unvaccinated students asked to stay home.
Turner said measles can have serious consequences. "It can do anything from killing you, to cause inflammation of the brain and brain damage, a whole lot of other consequences."
She also warned the virus weakens the immune system for months after infection, leaving patients vulnerable to other diseases.
The expert noted the world had come close to eliminating measles completely, but case numbers jumped again following a drop in vaccination coverage.
The call is aimed at preventing further disruption to end-of-year exams and celebrations at secondary schools.