According to Dr. Judy MacDonald, a medical officer of health with the Calgary Health Region, the move is precautionary and the group is being tested for their immunity to measles.
The results of the tests are scheduled to be released on Tuesday.
Vancouver health officials are also trying to track down the passengers that were on board the same flight as the Japanese tour group.
In Japan, a measles outbreak believed to be the largest in the past five years has infected hundreds of students and forced the closure of about a dozen universities in the country.
Measles is a highly contagious infectious disease spread through the inhalation of airborne droplets or close personal contact an infected person. Its symptoms of its most severe type, red measles, include a high fever; a harsh, dry cough; a runny nose; and red, puffy eyes that are sensitive to light.
