04/14/2014 02:44 EDT | Updated 06/14/2014 05:59 EDT

Calgary Measles Cases Keep Unvaccinated Students At Home

ROBYN BECK via Getty Images
A nurse loads a syringe with a vaccine against hepatitis at a free immunization clinic for students before the start of the school year, in Lynwood, California August, 27, 2013. Nurses are immunizing children in preparation for the first day of public school on September 3. The clinic offers the mandatory vaccinations for school children against diphtheria, tetanus, pertussis, polio, hepatitis B, MMR (measles, mumps, rubella) and chickenpox as well as some optional ones. AFP PHOTO / Robyn Beck (Photo credit should read ROBYN BECK/AFP/Getty Images)
CALGARY - New measles cases have prompted Alberta Health Services to tell some students and staff at two Calgary schools to stay home for the next two weeks because they have not been vaccinated.

Those affected attend or work at Henry Wise Wood High School and Sherwood School, which includes Grade 5 to 9 students.

The Calgary Board of Education says there is one confirmed case of measles at each school.

School officials say there is concern the measles, which is highly contagious, could spread.

Earlier this month more than 100 students at Western Canada High School in Calgary were told to stay home until April 22 because of possible measles exposure.

Alberta Health Services says there have now been seven confirmed measles cases in the Calgary area this year, three in central Alberta and one in Edmonton.

There are also two probable cases in central Alberta which are not yet confirmed.

Last fall, there were 42 confirmed cases in the Lethbridge area.

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