Compulsory measles vaccinations for all children starting primary school may be needed to prevent a resurgence of the disease, experts say.
Italian researchers believe the current voluntary programmes in countries like the UK will not be enough to curb outbreaks in the coming decades.
They said vaccination rates had fallen because of misleading campaigns claiming vaccinations are dangerous.
But others questioned whether compulsory vaccinations would help.
The researchers from the Bruno Kessler Foundation and Bocconi University raised concern about vaccination rates in a number of countries, including the US, Ireland and Australia, as well as in the UK.
They have used computer modelling to predict how many measles cases could occur, the journal BMC Medicine reported.
It found that the number of cases in the UK could double in the