Lucy WalshThe UK is facing the highest number of cases in Europe from an ongoing gastrointestinal outbreak linked to a Cape Verde resort, with 263 confirmed infections as of 18 March 2026. Health authorities across Europe have issued multiple warnings as the outbreak shows no signs of slowing, with over 1,000 total cases now reported.
The outbreak, centred at a resort in Santa Maria on Sal Island, involves multiple pathogens including Shigella sonnei, salmonella, cryptosporidium, giardia, campylobacter, and E. coli. The European Centre for Disease Prevention and Control (ECDC) has documented 766 confirmed cases across 13 EU/EEA countries, the UK, and the United States. Despite ongoing investigations, the source of contamination remains uncontrolled as of late March 2026.
UK Leads European Case Count
Britain's 263 confirmed infections represent the largest national total in the outbreak, according to the ECDC's latest epidemiological update. The scale of UK cases reflects both the popularity of Cape Verde as a British holiday destination and the effectiveness of surveillance systems in detecting returning travellers with symptoms.
Most affected individuals visited Cape Verde between December 2025 and March 2026. The majority of cases involve shigellosis, a bacterial infection causing severe diarrhoea, fever, and abdominal cramps. Secondary infections with other gastrointestinal pathogens have complicated diagnosis and treatment for many patients.
The ECDC has assessed the likelihood of new infections among current and future travellers to the affected resort as moderate. This risk level reflects the continued lack of clarity about the contamination source, despite months of investigation by Cape Verdean and international health officials.
What Travellers Need to Know
Shigella bacteria spread through the faecal-oral route, typically via contaminated food, water, or surfaces. At resort settings, transmission can occur through buffet food, ice, swimming pools, or inadequate hand hygiene facilities. Unlike some travel-related infections, no licensed vaccine exists for shigellosis, making prevention through hygiene measures essential.
Symptoms typically appear one to two days after exposure and include bloody diarrhoea, stomach pain, fever, and the urgent need to defecate. Most infections resolve within a week, but severe cases require medical attention. Children, elderly travellers, and those with weakened immune systems face higher risks of complications including dehydration and sepsis.
The UK Health Security Agency advises anyone who visited Cape Verde since December 2025 and experiences gastrointestinal symptoms to contact their GP immediately. Stool samples help identify the specific pathogen, guiding appropriate treatment. Antibiotics may be necessary for shigellosis, though antimicrobial resistance remains a concern with some Shigella strains.
Multi-Pathogen Complexity Challenges Response
This outbreak's unusual feature is the simultaneous circulation of six different gastrointestinal pathogens at a single location. This complexity suggests multiple contamination sources or a common source that harbours various microorganisms, such as inadequately treated water supply or sewage system failures.
Cryptosporidium and giardia are parasitic infections resistant to standard chlorination used in swimming pools and drinking water treatment. Their presence alongside bacterial pathogens points to fundamental sanitation infrastructure problems at the resort. Cape Verdean authorities have not publicly identified which resort remains affected, though travellers and tour operators have shared information through unofficial channels.
The outbreak has prompted British tour operators to review their Cape Verde programmes for summer 2026. Some have switched accommodation options for upcoming bookings, whilst others have enhanced pre-departure health information for customers. Travel insurance claims related to the outbreak have surged, according to industry sources.
Expert Medical Consultation Advised
Infectious disease specialists and tropical medicine doctors play a crucial role in managing cases from this outbreak. These experts can assess individual risk factors, interpret diagnostic tests, and provide targeted treatment when multiple pathogens may be present. Early consultation prevents complications and reduces the risk of secondary transmission within UK households.
Travellers planning trips to Cape Verde should consult a travel health specialist before departure. Whilst no vaccine prevents shigellosis, specialists can advise on preventive measures and provide prescriptions for standby antibiotics if needed. Post-travel consultations help identify infections early, even when symptoms appear mild initially.
The outbreak serves as a reminder that gastrointestinal infections remain among the most common travel-related health problems. Unlike the meningitis outbreak earlier this year, which affected primarily domestic populations, this Cape Verde situation demonstrates how resort environments concentrate exposure risk for international visitors.
Finding Medical Expertise for Travel Health
British travellers concerned about symptoms following Cape Verde visits, or planning future trips, can benefit from specialist consultation. Infectious disease doctors and tropical medicine specialists offer expertise in diagnosing and treating complex gastrointestinal infections. These consultations are particularly valuable when multiple pathogens may be present or when standard treatments have not resolved symptoms.
ExpertZoom UK connects patients with qualified specialists across infectious diseases and tropical medicine. The platform provides access to experts who understand the specific challenges of travel-related infections and can coordinate care with GP services.
Medical Disclaimer: This article provides general information about a public health situation and does not constitute medical advice. Readers experiencing symptoms should consult qualified healthcare professionals. Information about the Cape Verde outbreak is based on official health authority reports current as of 29 March 2026 and may change as investigations continue.
