Nine high-risk contacts in Canada linked to Andes hantavirus outbreak, officials say

The Public Health Agency of Canada says nine people in Canada are considered high-risk contacts in connection with an Andes hantavirus outbreak linked to passengers aboard the MV Hondius.

In an update issued Tuesday, federal officials said four Canadian passengers returned safely to British Columbia on May 10 and are currently in isolation. Public health assessments were conducted throughout their return, including upon arrival in Canada.

All four individuals remain asymptomatic and are being monitored by local public health authorities while completing a mandatory isolation period of at least 21 days, and up to 42 days. The isolation period began May 10, the last day a confirmed case was reported aboard the vessel.

Officials said five additional people in Canada are considered potentially exposed. Two had been on the ship but disembarked before the outbreak was identified, while three others may have been exposed during a flight involving a confirmed case. All are asymptomatic and under monitoring.

The agency noted the total number of high-risk contacts has been revised to nine after one previously identified individual in Québec was removed from the list following updated guidance from the World Health Organization.

Federal officials say the overall risk to the general population in Canada remains low.

Following guidance from the WHO, passengers and crew linked to the affected voyage, as well as individuals identified as high-risk contacts from flights, are advised not to travel. The Government of Canada has also implemented temporary measures preventing anyone who has been aboard the MV Hondius since April 1 from boarding flights to Canada.