Policy

Global Health Agencies Update Cruise Travel Guidance Following Cape Verde Hantavirus Event

Public health agencies in North America and Europe revise passenger advisories and vessel biosecurity standards months after the MV Hondius Andes hantavirus outbreak off Praia.

HCD

Hantavirus Cruise Desk

Outbreak Tracking Team · October 21, 2026 · 5 min read

Global Health Agencies Update Cruise Travel Guidance Following Cape Verde Hantavirus Event

Shifting Directives for Maritime Travelers

Public health authorities and foreign ministries across North America, Europe, and South America have consolidated a series of updated travel advisories and maritime biosecurity protocols for commercial cruise passengers. The revised notices follow the prolonged quarantine and international response surrounding the expedition vessel MV Hondius, which anchored off Praia, Cape Verde, earlier this year after detecting Andes hantavirus transmission among passengers and crew. While general leisure cruising has largely resumed normal itineraries, expedition routes operating in South America, the South Atlantic, and West Africa face increased scrutiny. National health agencies have moved from emergency response postures to long-term surveillance frameworks, instructing travelers to review port-specific pathogen warnings and urging vessel operators to maintain stringent rodent-exclusion measures before embarkation.

United States: Federal CDC and State Department Directives

The U.S. Centers for Disease Control and Prevention (US CDC) has updated its Traveler's Health notices, maintaining an advisory for individuals embarking on modest-vessel expedition cruises with shore itineraries in rural or wilderness regions of southern South America. The agency’s Vessel Sanitation Program (VSP), in coordination with international maritime authorities, has broadened inspection criteria to emphasize rodent vector control for any ship calling at ports adjacent to known reservoir habitats of Oligoryzomys longicaudatus, the long-tailed pygmy rice rat known to carry Andes virus. State-level departments of health across the United States have also begun alerting local healthcare providers to the possibility of delayed presentations of hantavirus cardiopulmonary syndrome (HCPS). Important context: state advisories emphasize that clinicians should take detailed 60-day travel histories for patients presenting with severe, unexplained febrile respiratory illness, specifically inquiring around recent maritime or expedition travel. The U.S. Department of State has reflected these maritime health recommendations in its country-specific travel advisories.Travel notices for Cape Verde, Chile. Argentina now feature explicit advisories detailing port biosecurity reviews and warning passengers that localized quarantine protocols may be enacted swiftly if suspected viral hemorrhagic fevers or rodent-borne pathogens are identified aboard an incoming vessel.

European Union and Regional Divergence

In Europe, the European Centre for Disease Prevention and Control (ECDC) has issued an updated technical framework advising national health authorities on vector surveillance for commercial vessels arriving from South Atlantic itineraries. While the ECDC doesn't set binding border controls, its guidance serves as the template for member states evaluating disembarkation protocols. National travel agencies across Europe have adopted varying advisory levels:

United Kingdom: The Foreign, Commonwealth & Development Office (FCDO) advises travelers on adventure and remote expedition cruises to confirm that their operators carry specialized medical evacuation insurance. Guidance published by the UK Health Security Agency (UKHSA) highlights the long incubation period of hantaviruses and instructs travelers to seek urgent medical care if respiratory symptoms occur within six weeks of disembarkation. - Germany: The Federal Foreign Office (Auswärtiges Amt) maintains country-specific guidance noting increased health screening at ports in the South Atlantic, advising German citizens that cruise ships may face unexpected itinerary diversions or quarantine inspections before docking. - France and Spain: Maritime prefectures and port health authorities continue to enforce mandatory pre-arrival maritime declarations of health (MDH) at least 48 hours before port entry for any vessel arriving from transatlantic or West African maritime corridors.

South America and Port Entry Requirements

South American nations have coordinated biosecurity standards along the Patagonian shelf and sub-Antarctic routes. Health ministries in Argentina and Chile—where Andes virus is endemic in specific rural rodent populations—have introduced mandatory pre-departure rodent inspections for all passenger ships preparing to depart for maritime expeditions. Port authorities in Ushuaia and Punta Arenas have implemented strict vector-barrier controls, including mandatory rat guards on all mooring lines, sealed storage rules for organic waste. Vector surveys certified by local health inspectors before passenger boarding. Under these port-state rules, any vessel unable to present valid, current deratting exemption documentation faces immediate administrative holds. Brazil’s National Health Surveillance Agency (Anvisa) has similarly reinforced maritime entry controls along its eastern seaboard, auditing sanitary conditions aboard vessels that have recently transited through archipelagic ports in the Atlantic, including Cape Verde.

Cruise Line Biosecurity and Screening Mandates

The International Maritime Organization (IMO) and the Cruise Lines International Association (CLIA) have worked with member operators to formalize uniform shipboard prevention standards. Here's the thing: under these operational frameworks, cruise operators must execute regular pest-management audits and maintain continuous temperature and symptom monitoring for passengers who participate in rural trekking excursions in endemic zones. Major cruise operators have introduced updated pre-boarding questionnaires that screen for potential exposure to rural shelters, unsealed storage sheds, and wild rodent habitats during preceding shore excursions. Ships are as well required to stock verified molecular diagnostic reagents or rapid antigen test kits where available, alongside advanced supportive respiratory equipment, ensuring crew medical staff can stabilize and isolate suspected respiratory cases at sea.

Recommendations for Travelers

Public health agencies collectively advise prospective cruise passengers to take the following precautions when booking or embarking on expedition cruises:

Consult official travel health portals: Travelers should monitor updates directly from the US CDC, ECDC, and national foreign ministries regarding port-of-call health alerts before departure. - Review operator medical protocols: Passengers are urged to verify that their cruise line maintains certified pest-control management, onboard negative-pressure isolation capacity, and clear medical repatriation coverage. - Exercise caution during shore excursions: In rural and wilderness destinations within endemic regions, travelers should avoid entering closed, poorly ventilated buildings, abandoned structures, or areas with visible rodent activity. - Monitor post-travel health: Since hantavirus symptoms typically emerge between one and six weeks after exposure, returning travelers who develop fever, muscle aches, severe fatigue, or respiratory distress must inform medical providers immediately of their recent cruise itinerary.