Yang Wang1, Yanni Dong1, Fengru Deng2, Dejun Liu1, Hong Yao1, Qijing Zhang3, Jianzhong Shen1, Zhihai Liu1, Yanan Gao1, Congming Wu1, Zhangqi Shen4. 1. National Centre for Veterinary Drug Safety Evaluation, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China. 2. National Centre for Veterinary Drug Safety Evaluation, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA. 3. College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA. 4. College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA szq@iastate.edu.
Abstract
OBJECTIVES: The objective of this study was to investigate the prevalence and antimicrobial resistance of Campylobacter isolated from broiler chickens and swine during 2008-14. METHODS: Campylobacter isolates were collected from samples of intestinal content and excreta from broiler chickens and swine from slaughter houses as well as conventional farms in five Chinese provinces during 2008-14. The agar dilution method was used to determine the susceptibility of Campylobacter isolates to seven antimicrobial agents. The χ(2) test and Fisher's exact test were used to perform the statistical analysis. RESULTS: In total, 989 Campylobacter jejuni and 1991 Campylobacter coli were isolated from 10 535 samples. MIC results revealed a high prevalence of multidrug resistance among these Campylobacter isolates. In addition, we observed an apparent shift of the dominant species from C. jejuni to C. coli in chickens and this species shift coincided with an increased prevalence of macrolide-resistant C. coli. It is worth noting that almost 100% of the C. jejuni and C. coli isolates were resistant to fluoroquinolones. CONCLUSIONS: The high prevalence of fluoroquinolone and macrolide resistance in Campylobacter suggests that these two clinically important antibiotic classes may no longer be suitable for the treatment of human campylobacteriosis in China. Thus, enhanced surveillance and control efforts are needed to reduce antimicrobial resistance in this group of major foodborne pathogens.
OBJECTIVES: The objective of this study was to investigate the prevalence and antimicrobial resistance of Campylobacter isolated from broiler chickens and swine during 2008-14. METHODS:Campylobacter isolates were collected from samples of intestinal content and excreta from broiler chickens and swine from slaughter houses as well as conventional farms in five Chinese provinces during 2008-14. The agar dilution method was used to determine the susceptibility of Campylobacter isolates to seven antimicrobial agents. The χ(2) test and Fisher's exact test were used to perform the statistical analysis. RESULTS: In total, 989 Campylobacter jejuni and 1991 Campylobacter coli were isolated from 10 535 samples. MIC results revealed a high prevalence of multidrug resistance among these Campylobacter isolates. In addition, we observed an apparent shift of the dominant species from C. jejuni to C. coli in chickens and this species shift coincided with an increased prevalence of macrolide-resistant C. coli. It is worth noting that almost 100% of the C. jejuni and C. coli isolates were resistant to fluoroquinolones. CONCLUSIONS: The high prevalence of fluoroquinolone and macrolide resistance in Campylobacter suggests that these two clinically important antibiotic classes may no longer be suitable for the treatment of human campylobacteriosis in China. Thus, enhanced surveillance and control efforts are needed to reduce antimicrobial resistance in this group of major foodborne pathogens.
Authors: Konstantinos Koutsoumanis; Ana Allende; Avelino Álvarez-Ordóñez; Declan Bolton; Sara Bover-Cid; Marianne Chemaly; Robert Davies; Alessandra De Cesare; Lieve Herman; Friederike Hilbert; Roland Lindqvist; Maarten Nauta; Giuseppe Ru; Marion Simmons; Panagiotis Skandamis; Elisabetta Suffredini; Héctor Argüello; Thomas Berendonk; Lina Maria Cavaco; William Gaze; Heike Schmitt; Ed Topp; Beatriz Guerra; Ernesto Liébana; Pietro Stella; Luisa Peixe Journal: EFSA J Date: 2021-06-17