Canadian officials have reported that one of four Canadians returning from a cruise ship with a hantavirus outbreak has a “presumptive positive” test result.

A Dutch couple believed to have brought hantavirus aboard the ship spent months traveling in Argentina, Chile and Uruguay before boarding.

The CDC said it is currently monitoring 41 people for hantavirus, including patients from the ship and those subsequently exposed.

A Canadian has tested positive for hantavirus after disembarking a cruise ship. The individual is among four Canadians isolating in British Columbia. The Andes strain of the virus…