A hantavirus outbreak traced to the cruise ship M/V Hondius has been declared contained, the World Health Organization reported, with 13 total cases and 3 deaths recorded as of 2 July 2026.
The WHO said this is the fifth Disease Outbreak News update on the event. The organization first received notification of severe acute respiratory illness cases aboard the vessel on 2 May 2026. The previous update was published on 28 May 2026.
Since that earlier posting, one probable case from Tristan da Cunha received laboratory confirmation, according to the WHO. Tristan da Cunha is a United Kingdom territory. Of the 13 total cases, 12 have been confirmed through laboratory testing for Andes virus infection, while one remains classified as probable. Every confirmed case involves a person who traveled on the M/V Hondius.
The WHO reported that 10 patients required hospital admission. Eight of those individuals recovered and were discharged. Two remain under medical treatment. The case fatality ratio stands at 23%, with 3 deaths among the 13 cases.
All identified contacts completed a 42-day follow-up period required by local health authorities, the WHO said. That protocol was conducted in line with WHO guidance. No secondary cases emerged during the follow-up window, and the WHO stated that the absence of new infections confirms transmission was successfully interrupted.
The WHO now considers the outbreak contained and no longer a public health risk, and the organization does not anticipate further related transmission. The 13-case cluster, centered on the M/V Hondius, has produced no new infections since monitoring concluded.