A Canadian passenger from the MV Hondius cruise ship has tested positive for hantavirus, health officials in British Columbia announced Saturday. The individual is one of four Canadians currently quarantining on Vancouver Island after being exposed to the virus during the cruise.

Dr. Bonnie Henry, British Columbia's provincial health officer, said during a news conference that the person developed mild symptoms, including fever and headache, two days ago. The individual and their partner, who had also been aboard the cruise ship, were transferred to a hospital in Victoria for assessment and testing.

The Public Health Agency of Canada confirmed the positive test result for the Andes hantavirus on Saturday. Both passengers had been isolating together since returning from the cruise.

The MV Hondius was the center of a hantavirus outbreak that has claimed three lives. The four Canadian passengers are currently in quarantine as a precautionary measure following their potential exposure to the virus during the voyage.

Hantavirus is a serious viral infection that can cause severe respiratory illness. The Andes strain, specifically identified in this case, is known to cause hantavirus pulmonary syndrome, which can be fatal if not treated promptly.