IN Brief:
- The European Commission reviewed national implementation of harmonised antimicrobial-resistance monitoring requirements.
- Surveillance covers zoonotic and commensal bacteria from food-producing animals and food.
- More consistent sampling, laboratory methods, and reporting should improve comparisons between countries and reporting periods.
The European Commission has completed a review of antimicrobial-resistance monitoring arrangements covering food-producing animals and food across the European Union and European Economic Area.
The overview brings together the results of a project conducted between 2023 and 2026, examining how national authorities implemented harmonised requirements for sampling, testing, analysing, and reporting resistance in zoonotic and commensal bacteria.
Antimicrobial resistance develops when microorganisms survive treatment by medicines that would normally inhibit or destroy them. Resistant bacteria can circulate between animals, food, people, and the environment, linking farm-level antimicrobial use with slaughter, processing, distribution, public health, and environmental controls.
European legislation establishes common monitoring procedures so that data from different countries can be compared. The Commission’s review found continued progress in implementation, alongside practical differences in sampling arrangements, laboratory capacity, coordination, procurement, data management, and interpretation of technical requirements.
Comparable surveillance requires more than conducting a set number of tests. Samples must represent the relevant animal populations, food categories, production systems, and geographical areas, while laboratories must use compatible isolation, susceptibility-testing, quality-assurance, and reporting procedures.
A dataset concentrated on one production system or slaughter category can produce a different resistance profile from a broader national programme. Unless those differences are recorded and understood, comparisons may reflect sampling design rather than genuine changes in prevalence.
Processors support representative sampling
Although many interventions intended to reduce antimicrobial use begin on farms and within veterinary practice, slaughterhouses and food-processing plants provide important sampling points. Their traceability systems connect isolates with species, origin, batch, production date, and processing stage.
Sampling must be organised without compromising hygiene or interrupting production, and official authorities need reliable access to the appropriate animals, carcasses, or products. Variations in slaughter schedules and sourcing can complicate efforts to obtain representative material within fixed monitoring periods.
Factory controls also influence the transfer of resistant organisms after animals arrive for processing. Separation, cleaning, disinfection, temperature management, water quality, carcass handling, and verified interventions limit cross-contamination in the same way they control susceptible bacteria.
Resistance does not make an organism immune to sound hygiene practice, although infections caused by resistant strains can be harder to treat. Preventing contamination therefore remains valuable regardless of the resistance profile identified through surveillance.
The EU’s wider effort to strengthen domestic protein and livestock resilience will depend on disease prevention, animal health, feed quality, housing, vaccination, and biosecurity rather than routine reliance on antimicrobials. Higher output cannot be sustained by using medicines to compensate for weak production conditions.
Reliable monitoring allows authorities to identify resistance patterns by organism, animal species, food category, and country, while repeated sampling shows whether control measures are producing measurable change. Delays, gaps, or incompatible datasets reduce the ability to distinguish local anomalies from wider trends.
Laboratories need consistent methods
National programmes depend on laboratories applying standard methods for bacterial isolation, antimicrobial susceptibility testing, quality control, and interpretation. Small procedural differences can alter whether an isolate is classified as susceptible or resistant, particularly near an established breakpoint.
Whole-genome sequencing is expanding the level of information available by identifying resistance genes, strain relationships, and possible transmission routes. Sequencing can support outbreak analysis and source attribution, although it cannot correct an unrepresentative sampling programme.
Detailed genomic analysis of a narrow or biased sample still produces a partial picture. Sample design, metadata quality, laboratory method, and interpretation must therefore develop together rather than allowing newer technology to conceal weaknesses elsewhere in the programme.
Food manufacturers may encounter stronger monitoring through official sampling, customer standards, supplier requirements, import controls, and animal-sourcing policies. Exporters could also face closer examination where European rules restrict products associated with antimicrobial practices prohibited within the EU.
Automated analysis will become more useful as datasets grow, provided that records contain consistent information on species, sample point, production system, geography, organism, method, and result. Missing or incompatible metadata limits the value of even a large testing programme.
The Commission’s review places emphasis on the infrastructure surrounding laboratory work: competent authorities, sample logistics, procurement, reporting platforms, quality systems, and cooperation between animal-health and food-safety bodies. Improvements in any one part of the chain can be lost when the remaining stages use incompatible processes.
Europe already collects a substantial volume of antimicrobial-resistance data from animals and food. The next phase requires national differences to reflect real epidemiology rather than differences in where samples were taken, how organisms were tested, or how results were reported.
