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This is the third Disease Outbreak News report on the hantavirus cluster, following the notification to the World Health Organization (WHO) on 2 May 2026 of severe respiratory illness cases aboard MV Hondius, a cruise ship. Since the last DON was published on 8 May, two additional confirmed cases were reported from France and Spain. In addition, there is one inconclusive result for a case in the United States of America. All were passengers on the ship. As of 13 May, a total of 11 cases, including three deaths, have been reported (case fatality ratio 27%). Eight cases were laboratory-confirmed for Andes virus (ANDV) infection, two are probable, and one case remains inconclusive and undergoing further testing. Through the International Health Regulations (2005) (IHR) channels, National IHR Focal Points (NFPs) have all been informed and are supporting international contact tracing efforts. WHO has assessed the risk posed by this event to the global population as low and will continue to monitor the epidemiological situation and update the risk assessment as needed.

On 2 May 2026, a cluster of passengers with severe respiratory illness aboard a cruise ship was reported to the World Health Organization (WHO). At that time, according to the ship operator, 147 passengers and crew were onboard, and 34 passengers and crew had previously disembarked. Since the last Disease Outbreak News published on 4 May, three of the suspected cases were confirmed, and one additional confirmed case was reported. As of 8 May, a total of eight cases, including three deaths (case fatality ratio 38%), have been reported. Six cases have been laboratory-confirmed as hantavirus infections, with all identified as Andes virus (ANDV). Through the International Health Regulations (2005) (IHR) channel, National IHR Focal Points (NFPs) have all been informed and are supporting international contact tracing. WHO assesses the risk to the global population posed by this event as low and will continue to monitor the epidemiological situation and update the risk assessment. The risk for passengers and crew on the ship is considered moderate.

On 2 May 2026, a cluster of passengers with severe respiratory illness aboard a cruise ship was reported to the World Health Organization. The ship is carrying 147 passengers and crew. As of 4 May 2026, seven cases (two laboratory confirmed cases of hantavirus and five suspected cases) have been identified, including three deaths, one critically ill patient and three individuals reporting mild symptoms. Illness onset occurred between 6 and 28 April 2026 and was characterized by fever, gastrointestinal symptoms, rapid progression to pneumonia, acute respiratory distress syndrome and shock. Further investigations are ongoing. The outbreak is being managed through coordinated international response, and includes in-depth investigations, case isolation and care, medical evacuation and laboratory investigations. Human hantavirus infection is primarily acquired through contact with the urine, faeces, or saliva of infected rodents. It is a rare but severe disease that can be deadly. Although uncommon, limited human to human transmission has been reported in previous outbreaks of Andes virus (a specific species of hantavirus). WHO currently assesses the risk to the global population from this event as low and will continue to monitor the epidemiological situation and update the risk assessment.

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No summary is available from the official feed.

No summary is available from the official feed.