The World Health Organization (WHO) has issued an international alert following a rare outbreak of hantavirus linked to the Dutch expedition cruise ship MV Hondius. The outbreak, originating from a voyage that departed Argentina in April, involves the Andes strain, notable for its uncommon ability to spread between humans. While global health agencies monitor the situation, experts reassure that the immediate risk to countries like India remains very low.
Global Outbreak Traced to Cruise Ship
The current hantavirus cluster is tied to passengers aboard the MV Hondius. The WHO initially raised concerns after several individuals developed severe respiratory illness during the voyage. The first reported death occurred on April 11, with the outbreak gaining international attention in early May after multiple evacuations and lab confirmations.
As of May 7, reports indicate at least eight confirmed or suspected cases and three fatalities. Passengers from various countries have been linked to the infections, with the Andes strain identified in multiple patients. The suspected “index case” reportedly involves a Dutch couple who may have contracted the virus during birdwatching activities in Argentina before boarding the ship.
Understanding the Andes Strain
Most hantaviruses are transmitted to humans through contact with infected rodents, typically via their urine, saliva, or droppings. Human-to-human transmission is exceedingly rare for most strains. However, the Andes strain, first identified in Argentina in 1995, is an exception, known to occasionally spread between people through prolonged close contact.
Despite this unique characteristic, health officials emphasize that the Andes strain is not expected to cause a pandemic similar to COVID-19. WHO chief Tedros Adhanom Ghebreyesus has stated that the global risk from this outbreak remains low.
India's Current Risk Assessment
Presently, there are no reported hantavirus cases in India linked to this specific outbreak. Health experts assess the likelihood of widespread transmission within India as low for several reasons:
- Hantavirus outbreaks are generally isolated events.
- Even with the Andes strain, human-to-human spread requires close and sustained exposure.
- The current outbreak is contained within a specific travel cluster.
India has experienced sporadic hantavirus infections in the past, but widespread outbreaks have not been common.
Symptoms and Prevention
Hantavirus symptoms can manifest anywhere from two to eight weeks post-exposure. Early signs include fever, muscle pain, fatigue, headache, and chills. In severe cases, the illness can rapidly escalate to breathing difficulties, pneumonia, and lung failure.
Doctors advise standard precautions, especially when traveling in rural or forested areas:
- Avoid direct contact with rodents and their droppings.
- Store food in sealed containers to prevent rodent access.
- Use disinfectants for cleaning rodent-infested areas instead of dry sweeping, which can aerosolize viral particles.
- Wash hands thoroughly and regularly.
- Seek medical attention promptly if flu-like symptoms develop after outdoor activities or potential wildlife exposure.