The measles outbreak reported in Lethbridge has now shifted north, with vaccination clinics now opening in central Alberta communities.

Health care workers are treating 23 cases of measles in the province as Alberta Health Services are targeting Two Hills and Lacombe in an attempt to control the outbreak.

More than 100 people have been seen in the isolation units set up outside the Lethbridge hospital.

AHS are reminding people that if you are sick, you should stay at home and call Health Link for advice.

Measles is highly contagious and has serious, potentially life-threatening reactions in victims.

Officials say that over 600 people have taken advantage of the mass immunization clinics that have opened since the outbreak was discovered.