The World Health Organization has said the current hantavirus outbreak linked to a cruise ship off Cabo Verde is serious but not comparable to the early stages of the COVID 19 pandemic. Health officials stressed that, based on what is known about hantaviruses, the risk of a global crisis similar to COVID is low.
As of 4 May 2026, seven cases connected to the Dutch flagged MV Hondius cruise ship have been identified, including two laboratory confirmed hantavirus infections and five suspected cases. Three deaths have been recorded, one patient is critically ill, and three others have reported milder symptoms.
The affected passengers developed illness between 6 and 28 April, with symptoms such as high fever, stomach upset, rapid progression to pneumonia, acute respiratory distress and shock. Investigations so far suggest that initial exposure likely occurred before boarding, with the possibility of limited secondary transmission in close contact settings on the ship.
Hantavirus is usually contracted through contact with urine, faeces or saliva from infected rodents rather than casual person to person spread. While rare cases of human to human transmission have been reported, especially with the Andes virus in South America, such events are uncommon and typically require very close contact.
WHO currently assesses the global risk from the outbreak as low and says there is no evidence of widespread community transmission. Officials emphasise that this is “not a virus that spreads like flu or like COVID” and that the situation is very different from the early days of the coronavirus pandemic.
In response to the cluster, an international operation has been launched involving case isolation and treatment, medical evacuations, detailed contact tracing and enhanced laboratory testing. Authorities are also working with the ship’s operator to improve sanitation, rodent control and other measures to prevent further infections.
Public health experts say the incident is a reminder of the ongoing risk posed by zoonotic diseases that jump from animals to humans. They have urged countries to strengthen surveillance, diagnostics and outbreak preparedness to detect and contain such threats early.
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