Meta-analysis of the prevalence of thermotolerant Campylobacter in food-producing animals worldwide

ROSSLER, E.; SIGNORINI, M.L.; ROMERO-SCHARPEN, A.; SOTO, L.P.; BERISVIL, A.P.; ZIMMERMANN, J.A.; FUSARI, M.L.; OLIVERO, C.R.; ZBRUN, M.V.; FRIZZO, L.S.

ZOONOSES AND PUBLIC HEALTH

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2019 vol. 66 p. 359 - 369

1863-1959

The objective of this meta-analysis was tosummarize available information on the prevalence of thermotolerant Campylobacter (TC) in different food-producing animals worldwide.Data-bases (i.e.PubMed, ScienceDirect, Scopus) were searched from 1980 to 2017unrestricted by language. The inclusion criteria were: prevalence or incidence studies,published in peer-reviewed journals, and they must have reported the total numberof animal samples studied and the number of samples that were positive for the presenceof TC. When the identification of Campylobacterspecies was available, this information was included in the analysis.Multilevel random-effect meta-analysis models were fitted to estimate meanoccurrence rate of TC and to compare them among different factors potentiallyassociated with the outcome. The mean occurrence rate of TC in food-producinganimals was 0.424 (95%CI 0.394 ? 0.455), and the mean occurrence rate of C. jejuni and C.coli were 0.214 and 0.133, respectively. Pigs and poultry showed the highest prevalenceof TC.; however, there were differences in the prevalence of each Campylobacter species. C.jejuni was observed in broilers (0.322; 95%CI0.273-0.377) and hens (0.395; 95%CI 0.265-0.542), while C. coli was restricted essentially in pigs (0.553; 95%CI0.541-0.650). The prevalence of C.jejuni in intensively bred cattle was higher (0.302;95%CI 0.227-0.389) than the prevalence in extensively bred cattle (0.172; 95%CI0.119-0.242) while the prevalence of C.coli was similar (0.051; 95%CI 0.028-0.091 vs. 0.050; 95%CI 0.027-0.091) inboth production systems. Agar with or without blood used for the isolation ofTC did not affect the prevalence observed. The method of species identificationdid not seem to generate differences in the prevalence of Campylobacter species. The prevalence of Campylobacter in primary food production has a strong impact onthe entire agri-food chain. National authorities must monitor the situationwith the aim to establish the appropriate risk management measures.