A French woman and an American man tested positive for hantavirus after countries repatriated passengers from the MV Hondius cruise ship, where an outbreak has been reported.
French Health Minister Stephanie Rist said Monday that a French passenger who had been on the ship tested positive and that her condition was deteriorating.
Four other French passengers tested negative, and authorities identified 22 contact cases.
The U.S. Department of Health and Human Services said Sunday that an American on a repatriation flight tested “mildly positive” for the virus and another person had mild symptoms. Both were traveling “in the plane’s biocontainment units out of an abundance of caution,” and all 17 MV Hondius passengers on board would undergo clinical assessment on arrival in the United States.
The MV Hondius was anchored near Tenerife in the Canary Islands after being stranded for weeks following the outbreak. Health authorities have been locating and monitoring passengers who left the ship before the outbreak was identified.
On Monday, 54 passengers and crew remained aboard. Of those, 22 were expected to disembark, while 32 were to remain on the ship as it returned to the Netherlands.
Spanish Health Minister Monica Garcia said a Dutch plane due to arrive in Tenerife on Monday afternoon would carry passengers who had previously been scheduled to depart on a flight operated by Australia.
Hantaviruses can cause severe respiratory illness. They are usually spread by rodents, but in rare cases can be transmitted between people. Symptoms can begin one to eight weeks after exposure and include headaches, fever, chills, gastrointestinal problems, and respiratory distress.
The Andes strain identified in the outbreak can have a fatality rate of 40 to 50%, particularly among older people. The WHO recommended a 42-day quarantine for cruise passengers.