Key result
Among 140 C. jejuni strains isolated from poultry sources in Southern Brazil, the virulence genes flaA, cadF, and cdtABC were highly prevalent (>74%), highlighting the pathogenic potential of circulating strains.
Why the study?
Campylobacter jejuni is a leading cause of foodborne illness globally, but reports on strains isolated from Latin-American countries are scarce.
Cross-Sectional (n=140)
Yes
Campylobacter jejuni strains isolated from poultry in Southern Brazil possess multiple virulence genes, highlighting their potential zoonotic risk and role in foodborne illness.
C. jejuni virulence profiles from Brazilian poultry may inform food safety; leaves open targeted surveillance before clinical or policy impact.
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: flaA, cadF, and invasion-associated (iam) genes, cdtABC operon (associated with the cytolethal distending toxin), and plasmidial virB11 and wlaN 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 (cdtA, cdtB, cdtC, flaA, and cadF), 2 (cdtA, cdtB, cdtC, flaA, cadF, and virB11), and 3 (cdtA, cdtB, cdtC, flaA, cadF, and wlaN) were the most common (> 60% of strains). We provide insight into factors related to the occurrence of this pathogen and their epidemiology.
No takes yet. Share an insight, caveat, or question.
Sierra–Arguello et al. (2021) conducted a cross-sectional in Campylobacter jejuni contamination (n=140). Campylobacter jejuni virulence genes was evaluated on Frequency of virulence genes (flaA, cadF, iam, cdtABC, virB11, wlaN). Among 140 C. jejuni strains isolated from poultry sources in Southern Brazil, the virulence genes flaA, cadF, and cdtABC were highly prevalent (>74%), highlighting the pathogenic potential of circulating strains.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: