One new case of measles in the Wellington region today, as a national outbreak continues

It brings the current total to 11 - only one linked to overseas travel.

Seven of the 10 locally acquired cases travelled on a Bluebridge ferry on October 3 - considered a high-risk exposure event.

Hundreds of students at Wellington College and Wellington Girls' College are close contacts of one infection.

The National Public Health Service's been helping schools inform contacts.