EN DIRECT – Hantavirus : six cas confirmés à ce jour, selon l’OMS

The World Health Organization (WHO) has confirmed six cases of Hantavirus associated with a cruise ship voyage, prompting international health coordination and the targeted repatriation of affected passengers. The outbreak has triggered investigations across multiple jurisdictions, including Argentina and Spain, to determine the origin of the contamination.

On May 8, 2026, it was announced that five French citizens currently aboard the vessel will be repatriated to France. These individuals are scheduled to be transported within 24 to 48 hours following the ship’s arrival in the Canary Islands.

Investigation into Outbreak Origins

Health authorities in Argentina have been investigating the potential source of the virus, specifically focusing on the city of Ushuaïa, a common port of call for cruises in the southern region. A primary line of inquiry involved determining if a Dutch national in Ushuaïa served as the initial source of the infection.

Argentine authorities have since addressed these concerns, stating that the possibility of a Dutch national acting as the patient zero in Ushuaïa is practically null.

The movement of the vessel from South American waters toward the Canary Islands has required cooperation between the Argentine government, Spanish port authorities, and the French government to manage the quarantine and medical evacuation of the passengers.

Hantavirus Transmission and Risks

Hantaviruses are a group of zoonotic viruses transmitted to humans primarily through contact with the urine, feces, or saliva of infected rodents. Infection typically occurs when aerosolized viral particles are inhaled, often in environments where rodent droppings have been disturbed, such as in storage areas or poorly ventilated spaces.

Depending on the specific strain of the virus, infection can lead to two primary clinical syndromes: Hantavirus Pulmonary Syndrome (HPS) or Hemorrhagic Fever with Renal Syndrome (HFRS). HPS is characterized by the rapid onset of respiratory failure and shock, while HFRS primarily affects the kidneys and can cause acute renal failure.

The appearance of the virus on a cruise ship is an unusual development, as these environments are typically subject to strict pest control measures. The WHO’s confirmation of six cases suggests a localized point of contamination or a specific exposure event that occurred during the voyage.

Medical protocols for Hantavirus involve supportive care, as You’ll see no widely available vaccines or specific antiviral treatments for the pulmonary syndrome. The urgency of the repatriation of the French nationals is tied to the need for specialized intensive care and monitoring in controlled hospital settings.

The current status of the remaining passengers and crew members remains under observation by international health officials to ensure no further transmission occurs. The coordination between the Canary Islands’ health services and the French medical teams is intended to prevent any secondary spread during the transit of the repatriated citizens.