A suspected outbreak of Hantavirus aboard a cruise ship has raised global concern after three passengers died and several others fell seriously ill.

The outbreak occurred on the MV Hondius, operated by Oceanwide Expeditions, during a voyage from Argentina toward Cape Verde.

Among those affected, a British national is currently in intensive care in Johannesburg, while additional passengers continue to be monitored.

What Is Hantavirus?

Hantavirus is a rare but potentially deadly virus primarily spread through contact with infected rodents — including their urine, droppings, or saliva.

According to the Centers for Disease Control and Prevention, human-to-human transmission is extremely uncommon.

Although cases are rare in places like the UK, infections are more frequently reported in parts of Asia, Europe, and the United States.

Key Symptoms to Watch For

Hantavirus infections can develop into two serious conditions:

1. Hantavirus Pulmonary Syndrome (HPS)

Early symptoms include:

  • Fatigue
  • Fever
  • Muscle aches (especially thighs, hips, and back)

Additional warning signs:

  • Headaches
  • Dizziness
  • Chills
  • Nausea, vomiting, or abdominal pain

Severe symptoms:

  • Coughing
  • Shortness of breath
  • Chest tightness as lungs fill with fluid

Around 38% of patients who develop severe respiratory symptoms may not survive.

2. Haemorrhagic Fever with Renal Syndrome (HFRS)

Early symptoms include:

  • Intense headaches
  • Back and abdominal pain
  • Fever and chills
  • Blurred vision

More serious complications:

  • Low blood pressure
  • Internal bleeding
  • Kidney failure

Fatality rates vary depending on the strain but can reach 5–15% in some regions.

How Is It Treated?

There is no specific cure for Hantavirus.

Treatment focuses on supportive care, including:

  • Oxygen therapy or ventilators for breathing issues
  • Fluids and rest
  • Dialysis in cases involving kidney failure

Early medical attention significantly improves survival chances.

Cruise Ship Situation Ongoing

The World Health Organization has confirmed investigations are ongoing, with health authorities coordinating efforts to manage the outbreak and evacuate affected passengers.

Officials continue to stress that while the situation is serious, hantavirus outbreaks remain rare.