The number of hantavirus infections connected to an outbreak aboard the luxury cruise ship MV Hondius has increased to 13 after Spain confirmed an additional case, according to the World Health Organization.

WHO Director-General Tedros Adhanom Ghebreyesus said Wednesday that the newly identified patient was among passengers currently in quarantine. The total number of confirmed cases linked to the outbreak has now reached 13.Three people infected during the outbreak have died, although no new fatalities have been reported since May 2, Tedros noted in a post on X.

Health officials said the situation remains stable. Infected passengers are receiving medical treatment, while other passengers continue to remain under quarantine measures.

Over the past two weeks, all remaining passengers, crew members, and medical personnel disembarked from the MV Hondius, the cruise ship at the center of the outbreak.

Hantaviruses are rodent-borne viruses capable of infecting humans and causing illnesses of varying severity depending on the strain. According to the WHO, between 10,000 and 100,000 human hantavirus cases are recorded globally each year.