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A cluster of hantavirus cases has been reported aboard the M.V. Hondius, a Dutch polar expedition vessel, prompting monitoring by the World Health Organization (WHO). The ship, which was traveling from Argentina to the Canary Islands, has confirmed seven cases of Andes hantavirus, with two additional suspected cases. Three passengers have died as a result of the outbreak.
The M.V. Hondius docked in Tenerife after being denied permission to dock in Cape Verde. In response to the outbreak, Spanish health authorities, alongside the WHO, coordinated the disembarkation of passengers. Seventeen American passengers and one British national residing in the United States were subsequently transferred to the National Quarantine Unit at the University of Nebraska Medical Center for further evaluation.
Hantaviruses are typically transmitted to humans from rodents through contaminated materials. The Andes strain is notable because it can be spread between humans, unlike most other hantavirus strains, which do not typically facilitate person-to-person transmission. However, health experts emphasize that the Andes virus spreads poorly and requires sustained close contact for transmission to occur.
Globally, hantavirus infections are relatively rare, with an estimated 10,000 to 100,000 cases each year, predominantly in Asia and Europe. In the Americas, annual infections range between 150 to 300, with the United States reporting 15 to 50 cases. The Andes virus has a higher fatality rate compared to other strains, but the number of infections remains small.
Public health officials have indicated that the risk of a broader outbreak is low due to the specific transmission dynamics of the Andes virus. Unlike highly contagious viruses such as COVID-19, which can spread through the air, the Andes virus requires close contact between individuals. This containment strategy has been effectively applied in the case of the M.V. Hondius, where health authorities are managing the situation carefully to prevent further spread.
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