Abstract
Simple SummaryThis study was designed to assess the epidemiology and antimicrobial resistance of Campylobacter jejuni in swine processing at a slaughterhouse in the Valencia Region (Eastern Spain). The results showed that all batches arrived at the slaughterhouse shedding Campylobacter in faeces, and remained positive during processing, even just before delivery to the consumer. In addition, 96.3% of C. jejuni isolates, the main species involved in human infection from food origin, were multidrug-resistant strains.Campylobacteriosis is the most commonly reported gastrointestinal disease in humans in the EU, mainly from poultry meat consumption. C. jejuni is the main species involved in the human disease. However, little is known about the role of swine meat in its epidemiology. Thus, the aim of this study was to assess the epidemiology and antimicrobial resistance of C. jejuni on swine processing at the slaughterhouse. To this end, a total of 21 pig herds were intensively sampled at the slaughterhouse. Campylobacter isolation was based on official method ISO 10272-1:2018, speciation was determined by the hippurate hydrolysis test, and antibiotic susceptibility was performed according to standard disc diffusion assay. The results showed that all batches shed Campylobacter in faeces upon arrival at the slaughterhouse and remained positive at the end of the slaughtering process (42.8%). Moreover, 41.5% of Campylobacter strains isolated were C. jejuni and all of them were resistant to at least one antibiotic, and 96.3% were multidrug-resistant strains. In conclusion, the high level of multidrug-resistant C. jejuni swine batch contamination at the slaughterhouse makes it necessary to include the swine sector in national control programmes to reduce the bacterium and its resistance.
Highlights
According to the different batches sampled (n = 21), all batches that arrived at the slaughterhouse were colonised by Campylobacter, and 42.8% (9/21) remained positive after cooling
(175/418) were positive for Campylobacter, with all samples collected from scalding water slaughterhouse were colonised by Campylobacter, and 42.8% (9/21) rebeing negative
This study showed a significant reduction of Campylobacter after cooling, C. jejuni remained constant despite the refrigeration temperature
Summary
The World Health Organisation (WHO) published that by 2050, AMR will cause. Under the One Health concept, whereby livestock and agri-food systems are at the crossroads of human, animal, and environmental health, it is widely acknowledged that the use of antimicrobials in veterinary medicine has an impact on AMR transmission between farms, animals, and humans [5,6]. In this sense, the WHO published the priority list of 12 antibiotic-resistant bacteria, which includes Campylobacter [7]
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