"Amebiasis is an infection of the gastrointestinal system. It is not common in Canada, and occurs more often in parts of the world where there is poor sanitation, such as in Mexico, Central America, western South America, southern Asia and western and southern Africa. Travelers to these areas are at risk of becoming infeced, if they do not take precautions with food and drinking water." http://dsol-smed.phac-aspc.gc.ca/dsol-smed/ndis/diseases/amoe-eng.php
I would take your lab results to a doctor in Canada for confirmation just to be on the safe side.