Wales' Health Minister says he "remains concerned" about the measles outbreak, and anticipates that the number of cases "will continue to rise over the coming weeks."
In a written statement, Mark Drakeford reiterated the calls of public health officials for as many people as possible to have MMR vaccinations.
Abertawe Bro Morgannwg Health Board begins vaccination clinics in schools in Swansea tomorrow, and Mr Drakeford said other health boards will also be offering catch-up clinics targeting schools with low vaccine uptake.
He said: "The Welsh Government, Public Health Wales and the Health Boards will continue to take all necessary and appropriate measures to reduce the impact of the outbreak as far as possible."
The latest figures on the number of cases in the outbreak are due later today. Last week they reached 693.
2013 is expected to be the worst year for measles in the UK for the past two decades. Read more about the illness and how it is treated.
If the Government's top adviser on immunisation thinks the risk of an emergency in England is a possibility, I believe him.