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Campylobacter jejuni  is one of the most common causes of foodborne diseases worldwide. There are few reports on  Campylobacter  strains isolated from Latin-American countries. Here, 140  C. jejuni  strains isolated from cloacal and transport boxes swabs, water from chiller tanks, and broiler carcasses of five poultry companies in Southern Brazil were identified using phenotypic and genotypic methods. Polymerase chain reaction (PCR) was used to analyze eight  C. jejuni  virulence markers:  fla A,  cad F, and invasion-associated ( iam ) genes,  cdt ABC operon (associated with the cytolethal distending toxin), and plasmidial  vir B11 and  wla N genes were present in 78.5%, 77.8%, 0%, 74.2%, 22.1%, and 10.7% of samples, respectively. There were 25 different virulence profiles: 1 ( cdt A , cdt B , cdt C , fla A ,  and  cad F), 2 ( cdt A , cdt B , cdt C , fla A , cad F ,  and  vir B11), and 3 ( cdt A,  cdt B , cdt C , fla A,  cad F ,  and  wla N) were the most common (> 60% of strains). We provide insight into factors related to the occurrence of this pathogen and their epidemiology.

Identification of pathogenic genes in Campylobacter jejuni isolated from broiler carcasses and broiler slaughterhouses