ArticleInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2026
Enhancing surveillance of foodborne bacteria and antimicrobial resistance using a large centralized laboratory database: Case study of Campylobacter and nontyphoidal Salmonella in Peru.
Article in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesRising antimicrobial resistance of foodborne pathogens threatens effective treatment. In LMICs, surveillance systems fail to capture diagnostic data generated by private laboratories. We assessed the value of private laboratory data to characterize the epidemiology, seasonality, and AMR profiles of Campylobacter and non-typhoidal Salmonella in Peru.
methodsA retrospective analysis was performed on stool culture data between 2020 and 2024. Positivity and resistance proportions were summarized by age group, sex, and hospitalization status. Seasonal trends were evaluated using generalized additive models, with interaction terms to assess age-specific seasonal effects.
resultsCampylobacter and NTS were isolated in 4.1% and 2.2% of samples (N = 47,724). Infants had over 20-fold higher odds of Campylobacter positivity compared to individuals ≥5 years. Ciprofloxacin resistance exceeded 95% in both Campylobacter jejuni and Campylobacter coli, while azithromycin resistance reached 8.2% and 38.9%, respectively. NTS positivity was highest in children under 5 years, remaining stable across older age groups. Resistance was observed to ceftriaxone (40.6%), ciprofloxacin (32.6%), and azithromycin (11.3%). Campylobacter exhibited significant, age-dependent seasonal patterns, with peak positivity between July and October.
conclusionDespite limitations in the availability of clinical data and harmonization of methods, private laboratories can provide timely information on pathogen burden, AMR, and seasonality that supports national surveillance. The use of this system may contribute to health security as reporting is significantly accelerated using automated laboratory data systems relative to passive centralized reporting systems.
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