ECOWAS Monitors Hantavirus Outbreak Linked to Cruise Ship in Cape Verde
The Economic Community of West African States (ECOWAS) is actively monitoring a hantavirus outbreak linked to a Dutch-flagged cruise ship off the coast of Cape Verde. The outbreak has affected eight individuals aboard the ship, resulting in three confirmed fatalities.
Initial Alerts and Response from Health Authorities
The situation came to light after the Cape Verde National Institute of Public Health alerted the ECOWAS Regional Surveillance and Disease Control Center (RCSDC) on May 2, 2026. The alert detailed reports of severe respiratory illness among the ship’s passengers and crew.
Demographics of Affected Individuals
The cruise ship was carrying 147 people from 23 different countries, although no nationals from ECOWAS member states were on board. By the time the alert was issued, two individuals had already succumbed to the illness, with a third patient requiring critical care and evacuation to South Africa.
Laboratory Confirmation of Infections
Laboratory tests subsequently confirmed that the evacuated patient was infected with hantavirus. A polymerase chain reaction (PCR) test conducted on May 3 validated the presence of the virus. As of May 8, there have been eight confirmed cases, which include six confirmed and two probable cases, reflecting a current case fatality rate of 37.5 percent.
Clinical Details and Geographical Spread
All six confirmed infections are linked to the Andes virus (ANDV), a strain commonly associated with South America known to cause hantavirus cardiopulmonary syndrome. Currently, four patients are receiving treatment in hospitals located in South Africa, the Netherlands, and Switzerland. Additionally, one suspected case remains in stable condition in isolation at the British territory of Tristan da Cunha in the South Atlantic.
Ongoing Investigations and Public Health Recommendations
The National Institute of Infectious Diseases in South Africa conducted initial laboratory confirmations, which were later validated by the Institut Pasteur de Dakar. Further investigations, including genome sequencing and serological studies, are ongoing. Health authorities emphasize that hantaviruses are mainly transmitted through contact with the excretions of infected rodents.
Preparedness and Risk Communication Strategies
Despite low global risk assessments, ECOWAS has urged member states to bolster their healthcare systems in anticipation of potential imported cases. The RCSDC recommends enhanced training for health workers in the detection, isolation, and management of orthohantavirus infections, alongside improved disease surveillance and public communication strategies.
