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The aim of this study was to determine the survival of Campylobacter jejuni in chicken meat samples at frozen temperatures and given length of incubation and to determine the impact of aerobic bacteria on the survival of C. jejuni. The chicken meat samples were inoculated with C. jejuni NCTC 11351 suspensions and stored in bags at temperatures of −20°C and −70°C. The mean value of C. jejuni from meat samples decreased from 7.52 log10 CFU/g after 30 minutes of incubation at ambient temperature, to 3.87 log10 CFU/g on the eighth week of incubation at −20°C, and to 3.78 log10 CFU/g at incubation at −70°C after the same incubation period. Both freezing temperatures, −20°C and −70°C, decreased the number of campylobacters. The presence of aerobic mesophilic bacteria did not influence the survival of C. jejuni in chicken meet samples. Keeping poultry meat at freezing temperatures is important for the reduction of C. jejuni, which has a strong influence on the prevention of occurrence of campylobacteriosis in humans.

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Acta Microbiologica et Immunologica Hungarica
Authors: Nina Bulajić, Biljana Miljković-Selimović, Zoran Tambur, Branislava Kocić, Katarina Kalevski, and Ema Aleksić

Abstract

Campylobacter spp. are commensal organisms in the intestinal tract of food producing and companion animals. There is an increasing trend of human campylobacteriosis worldwide, including complicated cases that request treatment by antibiotics. Prevalence of resistance continually increases, especially to fluoroquinolones and tetracyclines. There are many reports on multiresistant strains of Campylobacter spp.

In this work we present the available information about the prevalence and antimicrobial resistance of Campylobacter spp. worldwide, as well as studies from Serbia published in last two decades. Campylobacter strains isolated from animal samples in Serbia showed increased prevalence of antimicrobial resistance to all clinically relevant antibiotics. Preliminary data (2014–2019) from Reference laboratory for Campylobacter and Helicobacter at the Institute of Public Health of Niš, Serbia show high resistance rates to ciprofloxacin (90%) and to tetracycline (50%) but low resistance to erythromycin (<5%) in human Campylobacter isolates.

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