Abstract
The sensititivity of thermophilic Campylobacter strains isolated from caecum of broiler chickens as well as caecum and colon of pigs and human stools, were tested against erythromycin. In 16 strains isolated in broiler chickens, resistance rate was found to be 12.50%. Three of 10 strains of Campylobacter jejuni and one of 6 strains ofCampylobacter coli isolated from broiler chickens were resistant to erythromycin. In 15 strains of thermophilic Campylobacters isolated from pigs, resistance rate to erythromycin was 40.00%. Resistance was exhibited more often in C. coli (50.00%) as compared to C. jejuni (20.00%). In 24 strains isolated from humans, resistance was demonstrated at the rate of 12.50%. Out of 17 strains of C. jejuni isolated from humans, resistance was exhibited in 17.65% strains. None of 7 strains of C. coliisolated from humans exhibited resistance to erythromycin. ThermophilicCampylobacters, especially C. coli isolated from pigs were more resistant to erythromycin than strains isolated from humans and broiler chickens. Therefore, a great attention should be directed to the macrolides monitoring in swine farming in order to prevent resistance in animals and its subsequent spread to human. Key words: Campylobacter spp., resistance, erythromycin.
Highlights
Campylobacteriosis is the most frequent intestinal bacterial infection in humans, more frequent than salmonellosis, shigellosis, infections caused by enterohaemorrhagic Escherichia coli strains and yersiniosis
Fifty-five Campylobacter spp. strains were studied: 10 C. jejuni and 6 C. coli strains from broiler chickens, 5 C. jejuni and 10 C. coli from pigs as well as 17 C. jejuni and 7 C. coli strains from humans
Three of 10 C. jejuni strains isolated from broiler chickens and 1 of 5 strains isolated from pigs were resistant to erythromycin (Table 2)
Summary
Campylobacteriosis is the most frequent intestinal bacterial infection in humans, more frequent than salmonellosis, shigellosis, infections caused by enterohaemorrhagic Escherichia coli strains and yersiniosis. Intestinal campylobacteriosis in humans is the result of infection due to thermophilic Campylobacter spp., mostly Campylobacter jejuni and Campylobacter coli, resulting in 400 million bacterial intestinal infections around the world every year (Putnam et al, 2003; Zimmer et al, 2003). A very important factor in intestinal campylobacteriosis development is a very low infective doses of only 500 bacteria (Walker et al, 1986). Campylobacter spp. is a major cause of bacterial. Poultry in age of two to three weeks are 50 to 90% colonized by thermophilic Campylobacter spp. (Hariharan et al, 2009; Newel, 2002). Swines are less colonized by Campylobacters spp. than poultry. A similar result has been obtained in a study performed in Serbia (Tambur et al, 2008)
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