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  • Title: Genetic diversity and antimicrobial resistance profiles of Campylobacter coli and Campylobacter jejuni isolated from broiler chicken in farms and at time of slaughter in central Italy.
    Author: Pergola S, Franciosini MP, Comitini F, Ciani M, De Luca S, Bellucci S, Menchetti L, Casagrande Proietti P.
    Journal: J Appl Microbiol; 2017 May; 122(5):1348-1356. PubMed ID: 28194914.
    Abstract:
    AIMS: Genetic diversity and antimicrobial resistance of Campylobacter coli and Campylobacter jejuni were investigated along the broiler chicken production chain in central Italy. METHODS AND RESULTS: Campylobacter sp. isolated from cloacal swabs in farms (n = 116) and from the neck skin of chilled and eviscerated carcasses at slaughter (n = 24) were identified as C. coli (n = 99) and C. jejuni (n = 41) by multiplex PCR. Characterization by single amplified fragment length polymorphism (s-AFLP) revealed a specific genotype of Campylobacter for each farm. Minimal inhibitory concentration showed high prevalence of fluoroquinolones (70%), tetracycline (70%) and erythromycin (30%) resistance among C. coli isolates. Campylobacter jejuni isolates showed lower prevalence of fluoroquinolone (39%) and tetracycline (10%) resistance, and all isolates were susceptible to erythromycin. The S-AFLP types of the C. coli and C. jejuni isolates were associated with their antimicrobial resistance profiles (P < 0·001). CONCLUSIONS: The genetic diversity detected in Campylobacter isolates suggested that a specific genotype was harboured in each farm. A considerable number of C. coli isolates were resistant to erythromycin. SIGNIFICANCE AND IMPACT OF THE STUDY: Campylobacter coli was detected more frequently than C. jejuni in contrast to common findings for poultry. The high prevalence of 30% resistance to erythromycin in C. coli strains isolated from poultry is worrisome, as this is the first antibiotic of choice to treat human campylobacteriosis.
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