Health alert at Calgary high school over potential tuberculosis exposure

Health officials are notifying 200 people at a high school in Calgary's north end about a potential exposure to two cases of tuberculosis, a potentially fatal disease. The Alberta Health Services issued the advisory on Wednesday afternoon and says all of the affected individuals are being notified by a mailed letter. Officials say the only people who are at risk of coming into contact with the disease are being notified. The letter includes information about where to go for a standard TB assessm