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Isolation and Identification of Zoonotic Species of Genus Arcobacter from Chicken Viscera Obtained from Retail Distributors of the Metropolitan Area of San José, Costa Rica

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Arcobacter is a genus of growing importance worldwide; some of its species are considered emerging enteropathogens and potential zoonotic agents. In Costa Rica, as well as in other countries, its isolation has been reported, so the objective of this project was to evaluate and identify the presence of Arcobacter in chicken viscera sold in the metropolitan area of San José, Costa Rica, as well as to determine the antimicrobial resistance patterns associated with it. One hundred fifty samples of chicken viscera including heart, liver, and other gastrointestinal organs were purchased from 15 supermarkets and 15 local retailers. De Boer and Houf broths were used as enrichment media; isolation was done with Arcobacter-selective medium and with membrane filtration with blood agar. Typical colonies were identified with genus-specific PCR, and species identification was made with multiplex PCR. Susceptibility to ampicillin, ciprofloxacin, chloramphenicol, erythromycin, gentamicin, and tetracycline was done with the Epsilometer test. The isolation frequency of Arcobacter genus obtained in this study was of 17.3%. A total of 33 isolates were obtained from the poultry samples, and according to the multiplex PCR methodology, 22 (66.7%) isolates were identified as Arcobacter butzleri, 8 (24.2%) as Arcobacter cryaerophilus, and 1 (3.1%) as Arcobacter skirrowii. Two strains were not identified. No statistical significant difference was found when the source of samples was compared. Resistance toward chloramphenicol was 68.75%, followed by ampicillin (43.75%) and ciprofloxacin (18.75%); all strains were susceptible to tetracycline.

Document Type: Research Article


Affiliations: 1: Tropical Disease Research Center and Microbiology Faculty, University of Costa Rica, San José, Costa Rica 2: Institute of Clinical Microbiology, Universidad Austral de Chile, Valdivia, Chile 3: Tropical Disease Research Center and Microbiology Faculty, University of Costa Rica, San José, Costa Rica.

Publication date: 2013-05-01

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