WHO Warns 12 Countries As Cruise Outbreak Raises Travel Safety Questions

The World Health Organisation has warned 12 countries to step up monitoring after a hantavirus outbreak was reported on board the South Atlantic expedition ship MV Hondius. As of May 8, five infections had been confirmed, including three deaths. The spread of passengers and crew across multiple countries after the voyage has added to concerns among health officials about the potential international impact of the outbreak and the challenges it could pose for global travel.

Here is what travellers should know.

Affected Countries And Surveillance

The WHO has issued alerts to 12 countries to initiate surveillance, monitoring, and contact tracing of passengers, including the USA, UK, Canada, Germany, Singapore, Switzerland, New Zealand, Denmark, the Netherlands, Saint Kitts and Nevis, Sweden, and Türkiye.

Concerns focus on the international spread by passengers who disembarked, demanding urgent contact tracing, monitoring, and quarantine measures. Travellers who were recently on cruises in the region have been advised to watch for symptoms such as fever, fatigue, and muscle aches in the weeks following their journey.

Global Travel Health Concerns

• Potential for international spread: Passengers from 12 countries, including the United States, the United Kingdom, Canada, Germany, Singapore and New Zealand, had already returned home before the outbreak was identified.

• Andes virus strain: Unlike most hantaviruses, which are typically spread from rodents to humans, the Andes strain has, in rare cases, been linked to person-to-person transmission.

• Long incubation period: Symptoms can take several weeks to appear, complicating efforts to trace contacts and contain the outbreak.

• Severity of illness: Some patients developed hantavirus pulmonary syndrome, a serious respiratory condition that can lead to acute breathing difficulties and death, prompting heightened surveillance by health authorities.

• No travel ban: The CDC considers the risk to the general public, not on the affected cruise, to be minimal, and normal travel can continue.

Global Travel Implications

While no major travel bans or restrictions have been introduced, the outbreak is beginning to have wider effects on the travel industry:

• Enhanced screening at ports: Travellers may encounter additional health questionnaires or screening measures at ports of entry, particularly in areas such as the Canary Islands, where the ship is expected to dock.

• Eco-tourism vigilance: The WHO has urged greater caution among eco-tourism travellers, especially those visiting remote parts of Argentina and other regions of South America, where the Andes strain is known to circulate.

• Cruise industry response: The incident has led to tighter sanitisation protocols across several cruise operators. Although the US Centers for Disease Control and Prevention has not issued a “no-sail” order, travellers are being advised to report flu-like symptoms promptly and seek medical attention where necessary.

• 2026 World Cup concerns: With the 2026 World Cup approaching, infectious disease specialists in host cities such as New York are maintaining heightened surveillance, although officials have stressed there is currently no cause for alarm over international arrivals.

(With inputs from various sources)

FAQs

What is hantavirus?
Hantavirus is a group of viruses primarily spread through contact with infected rodents or their droppings. In severe cases, it can lead to hantavirus pulmonary syndrome, a serious respiratory illness that may become life-threatening.

Why has the MV Hondius outbreak raised international concern?
The outbreak has drawn attention because passengers and crew dispersed across at least 12 countries before the infections were identified, increasing concerns about cross-border monitoring and possible exposure during international travel.

What is unusual about the Andes strain?
Most hantavirus infections are transmitted from animals to humans. However, the Andes strain has, in rare instances, been associated with person-to-person transmission, which has prompted closer surveillance by public health authorities.

What symptoms should travellers watch for?
Early symptoms can include fever, fatigue, headaches, muscle pain and chills. In more severe cases, breathing difficulties may develop as the illness progresses.

Are there any travel restrictions in place?
At present, no major travel bans or cruise restrictions have been announced. Health officials are instead focusing on contact tracing, passenger monitoring and precautionary screening measures.