Hantavirus: The truth about the outbreak and statements from the World Health Organization
The World Health Organization issued a statement to reassure the global public regarding the Hantavirus outbreak on a cruise ship, emphasizing that the incident, while serious, does not represent the start of a new pandemic. This statement followed the deaths of three passengers and the infection of others, which had raised international concerns about the emergence of a new epidemic.
What is the Hantavirus? Scientific and historical context
Hantavirus is not a new virus; it belongs to a family of viruses primarily transmitted by rodents, such as mice and rats. Human infection usually occurs through inhalation of airborne particles contaminated with the urine, feces, or saliva of infected rodents. The virus causes two main diseases: Hantavirus Pulmonary Syndrome (HPS), which is prevalent in the Americas, and Hemorrhagic Fever with Renal Syndrome (HFRS), which is common in Europe and Asia. The Andean strain, identified in this case, is exceptional and rare due to its ability to spread from person to person through close contact.
Historically, the virus gained international notoriety after an outbreak in the Four Corners region of the United States in 1993, but it was known decades earlier, with cases of hemorrhagic fever recorded among soldiers during the Korean War in the 1950s. Therefore, its emergence is not surprising to the scientific community, but every new outbreak requires close monitoring.
Details of the incident on the ship “MV Hondoios”
The cruise ship MV Hondoios was en route from Argentina to Cape Verde when several passengers began showing symptoms. The World Health Organization (WHO) confirmed eight suspected cases, five of which tested positive for hantavirus, resulting in three deaths. WHO Director-General Tedros Adhanom Ghebreyesus stated, “To date, eight cases have been reported, including three deaths. Five of these cases have been identified as being caused by hantavirus.” He added that given the virus’s incubation period, which can be up to six weeks, more cases could be reported.
Maria Van Kerkhove, director of the WHO's Department of Epidemic Preparedness and Prevention, explained that the incident "is not the start of an epidemic, but it is an opportunity to remind everyone of the importance of investing in research on pathogens, because treatments, vaccines and diagnostics save lives.".
International importance and influence
Although the risk of widespread outbreak is “low,” according to the WHO assessment, the incident underscores the importance of global health vigilance. It prompted a coordinated international response, with 12 countries whose citizens were on board the ship being notified, including Canada, Germany, the Netherlands, Switzerland, the United Kingdom, and the United States. Health authorities in these countries are working to trace contacts and monitor for any potential cases. The ship and its remaining crew are also under strict quarantine and monitoring procedures before being allowed to return home. This incident represents a new test of the International Health Regulations and the ability of countries to cooperate to prevent the cross-border spread of infectious diseases, particularly in the cruise tourism sector, which has already faced significant challenges during the COVID-19 pandemic.
Prevention and treatment
Currently, there is no specific treatment or approved vaccine against hantaviruses. Treatment primarily relies on supportive care in hospitals, such as providing oxygen and respiratory support for those with hantavirus pulmonary syndrome. Therefore, prevention remains the first line of defense, and this involves avoiding exposure to rodents and their droppings, and taking necessary precautions when cleaning areas where rodents may be present, such as basements, campsites, and rural homes.
