53 students at a Calgary high School are being warned that they may have been exposed to the tuberculosis virus.
Alberta Health Services is in the process of notifying students at a school in the city where they say was a confirmed case.
Warning Letters sent by AHS over the next couple of days will include how to assess for the infection, along with details for screening and treatment.
It is unlikely students were actually infected, and there is low risk to other people in the school or to the general public.
AHS will not be giving any further details or name the school where the exposure happened to protect the identity of the students.
Tuberculosis infection occurs when TB germs are inhaled into the lungs.
For more information, you can visit the AHS website.