Multidrug-Resistant Campylobacter Strain Spread in Europe
A bacterial strain identified across nine countries reveals how foodborne infections travel beyond individual borders.
Updated on Sept. 24, 2026 in Diseases — General
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Researchers identified a multidrug-resistant strain of Campylobacter coli, known as sequence type 10042, circulating throughout Europe between 2018 and 2025. The study highlights that many human infections are part of interconnected cross-border clusters rather than isolated events.
Why it matters
Understanding these cross-border clusters is essential for improving food safety monitoring and infection control across the continent. This investigation was launched following a notable surge in Campylobacter cases in Portugal during 2022.
Using whole genome sequencing on 217 isolates, researchers tracked a resistant strain across nine countries. Of 30 food and animal isolates identified, 25 were linked to poultry, underscoring a significant animal-to-human connection.
The players
Campylobacter coli
A foodborne bacterium that commonly causes gastrointestinal illness in humans.
The details
The researchers employed whole genome sequencing to compare the genetic makeup of bacteria collected from humans, animals, and food sources. By analyzing data from various European databases, they mapped the spread of the ST10042 strain, identifying distinct transmission clusters. In Ireland, for instance, genetic evidence linked chicken and human isolates, demonstrating how this pathogen moves through the food supply chain to reach consumers.
Timeline
The multidrug-resistant strain circulated across Europe from 2018 to 2025.
The 104 Portuguese isolates were collected between 2020 and 2025.
Campylobacter coli infections reached a peak in Portugal in 2022.
Health Landscape
This study underscores the critical role of European public health genomic surveillance databases in identifying cross-border transmission patterns for foodborne illness. By mapping these resistant strains, scientists are building a more comprehensive view of how drug resistance spreads through international food chains.
Standard food hygiene remains the most effective defense against Campylobacter infection, including proper handwashing and ensuring poultry is cooked thoroughly. If you experience persistent gastrointestinal symptoms, consult your physician to discuss potential testing or treatment options.
The takeaway
This finding confirms that foodborne bacteria can travel across borders, turning localized food safety issues into international concerns. To minimize your personal risk, always follow strict food handling practices, particularly when preparing raw poultry.
Further reading
For more information on the evolving threat of foodborne pathogens, visit our section on Diseases — General.
Source note: This article includes information reported by Food Safety News.
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