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Hantavirus Outbreak on Cruise Ship in Atlantic Reports Three Deaths, Several Ill
The World Health Organization (WHO) announced on Sunday that a suspected hantavirus outbreak aboard a cruise ship navigating the Atlantic Ocean has resulted in three fatalities and at least three additional illnesses. Investigations are ongoing, with one confirmed hantavirus case reported so far.
One patient is currently receiving intensive care at a hospital in South Africa, while health officials are coordinating efforts to evacuate two other symptomatic passengers from the vessel. The WHO is working closely with local authorities to manage the situation.
Although the WHO has not released the ship’s name, South African media have identified it as the MV Hondius, which was traveling from Argentina to Cape Verde along the West African coast. According to maritime tracking data, the Dutch-flagged passenger ship is currently docked in Praia, the capital of Cape Verde.
The health status of other passengers onboard who have not shown symptoms remains unclear at this time.
Understanding Hantavirus
Hantaviruses are primarily transmitted through contact with rodent urine, droppings, or saliva. While bites and scratches from infected rodents can occasionally spread the virus, such cases are rare.
In the Western Hemisphere, including the United States, hantaviruses can cause hantavirus pulmonary syndrome (HPS), a severe respiratory disease. Deer mice are the main carriers of these viruses in the U.S.
In contrast, Europe and Asia see more cases of hemorrhagic fever with renal syndrome (HFRS), another illness caused by hantaviruses. The Seoul virus, a variant responsible for HFRS, has a global distribution and is present in the U.S. as well.
Symptoms and Risks
Hantavirus symptoms vary depending on the syndrome involved. HPS symptoms typically appear one to eight weeks after exposure and include fatigue, fever, and muscle aches-especially in large muscle groups such as hips and thighs.
Patients may also experience headaches, chills, dizziness, and gastrointestinal issues like nausea and vomiting. As the disease progresses, respiratory symptoms such as coughing and shortness of breath emerge due to fluid buildup in the lungs.
HPS carries a mortality rate of about 38% among those who develop severe respiratory complications.
HFRS symptoms usually develop within one to two weeks and begin with intense headaches, fever, back and abdominal pain, and sometimes blurred vision or facial flushing. Severe cases can lead to low blood pressure, internal bleeding, and kidney failure, with fatality rates ranging from 1% to 15% depending on the virus strain.
Recovery from hantavirus infections can be prolonged, taking weeks or months.
Prevention and Public Health Advice
The Centers for Disease Control and Prevention (CDC) advises minimizing exposure to rodents and sealing entry points to prevent their access to homes and eating areas. Early detection of hantavirus infections is challenging within the first 72 hours after exposure, but testing afterward can usually confirm the diagnosis.
This recent outbreak aboard the MV Hondius underscores the importance of vigilance and prompt response when dealing with rodent-borne illnesses, particularly in confined environments such as cruise ships. Health authorities continue to monitor the situation closely as investigations proceed.