Biotypes, serogroups and antibiotic susceptibility of Campylobacter jejuni and Campylobacter coli in Chile

Figueroa, Guillermo; Troncoso, Miriam; Galeno, H.; Soto, Vivian Vialat; Toledo, Marcela

doi:10.1016/0163-4453(90)93314-i

Cited by 14 publications

(12 citation statements)

References 13 publications

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“…The possibility that the actual breakpoint for erythromycin may actually be lower than that suggested by the National Antimicrobial Resistance Monitoring System may account for the lack of C. jejuni isolates on the medium amended with erythromycin at a concentration of 4 g ml Ϫ1 . Erythromycin resistance in C. coli is relatively common relative to that in C. jejuni (15), but little is known about AMR development in C. hyointestinalis. It is well documented that erythromycin resistance is readily selected for in bacteria occurring in the GI tracts of animals ingesting feed supplemented with the macrolide tylosin (27).…”

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confidence: 99%

Effects of Subtherapeutic Administration of Antimicrobial Agents to Beef Cattle on the Prevalence of Antimicrobial Resistance in Campylobacter jejuni and Campylobacter hyointestinalis

Inglis

McAllister

Busz

et al. 2005

Appl Environ Microbiol

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The influence of antimicrobial agents on the development of antimicrobial resistance (AMR) in Campylobacter isolates recovered from 300 beef cattle maintained in an experimental feedlot was monitored over a 315-day period (11 sample times). Groups of calves were assigned to one of the following antimicrobial treatments: chlortetracycline and sulfamethazine (CS), chlortetracycline alone (Ct), virginiamycin, monensin, tylosin phosphate, and no antimicrobial agent (i.e., control treatment). In total, 3,283 fecal samples were processed for campylobacters over the course of the experiment. Of the 2,052 bacterial isolates recovered, 92% were Campylobacter (1,518 were Campylobacter hyointestinalis and 380 were C. jejuni). None of the antimicrobial treatments decreased the isolation frequency of C. jejuni relative to the control treatment. In contrast, C. hyointestinalis was isolated less frequently from animals treated with CS and to a lesser extent from animals treated with Ct. The majority (>94%) of C. jejuni isolates were sensitive to ampicillin, erythromycin, and ciprofloxacin, but more isolates with resistance to tetracycline were recovered from animals fed Ct. All of the 1,500 isolates of C. hyointestinalis examined were sensitive to ciprofloxacin. In contrast, 11%, 10%, and 1% of these isolates were resistant to tetracycline, erythromycin, and ampicillin, respectively. The number of animals from which C. hyointestinalis isolates with resistance to erythromycin and tetracycline were recovered differed among the antimicrobial treatments. Only Ct administration increased the carriage rates of erythromycinresistant isolates of C. hyointestinalis, and the inclusion of CS in the diet increased the number of animals from which tetracycline-resistant isolates were recovered. The majority of C. hyointestinalis isolates with resistance to tetracycline were obtained from cohorts within a single pen, and most of these isolates were recovered from cattle during feeding of a forage-based diet as opposed to a grain-based diet. The findings of this study show that the subtherapeutic administration of tetracycline, alone and in combination with sulfamethazine, to feedlot cattle can select for the carriage of resistant strains of Campylobacter species. Considering the widespread use of in-feed antimicrobial agents and the high frequency of beef cattle that shed campylobacters, the development of AMR should be monitored as part of an on-going surveillance program.

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confidence: 99%

Effects of Subtherapeutic Administration of Antimicrobial Agents to Beef Cattle on the Prevalence of Antimicrobial Resistance in Campylobacter jejuni and Campylobacter hyointestinalis

Inglis

McAllister

Busz

et al. 2005

Appl Environ Microbiol

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“…An increasing number of antibiotic-resistant strains of different enteropathogenic bacteria have been identified in developed as well as in developing countries (6,8). Resistance to erythromycin (19,26) or tetracycline in Campylobacter spp.…”

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confidence: 99%

Antimicrobial susceptibilities of Campylobacter jejuni and Campylobacter coli isolated in Sweden: a 10-year follow-up report

Sjögren

Kaijser

Werner

1992

Antimicrob Agents Chemother

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Resistance to erythromycin and doxycycline and more recently to fluoroquinolones has been reported to occur in Campylobacter spp. both in vitro and in patients treated with these antibiotics. The frequency of resistance to 14 antimicrobial agents in Campylobacter jejuni and Campylobacter coli isolated from patients infected in Sweden or abroad is described. For some agents, a comparison of susceptibility in strains of Campylobacter spp. isolated in 1978 with those isolated in 1988 is made. No general increase in in vitro resistance to antibiotics commonly used for the treatment of human gastroenteritis caused by C. jejuni or C. coli has occurred during the last 10 years in Sweden, which might be a consequence of strict antibiotic control. The numbers of strains from 1988 to 1989 resistant to ciprofloxacin and to norfloxacin included in this study (0.7 and 1.4%, respectively) are still fewer than those that were resistant to erythromycin (7.3%) or doxycycline (12.4%). There is, however, since 1989 to 1990 an indication of increasing resistance to these antibiotics.

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“…The nine common phage types (3,5,10,11,18,19,23,6 and 44) observed among humans were also observed among non-human isolates. The most common phage type 11 was found among humans, bovines, poultry and swine, whereas phage type 23, seen in humans, was found only among bovine isolates.…”

Section: Phage Types Of C Jejuni and C Coli From Various Countriesmentioning

confidence: 81%

“…This has emphasized the need for differentiation for epidemiological purposes of outbreak isolates and determination of the possible role that non-human sources play in human infections. Serotyping [3] and biotyping schemes [4] are now well established and used by various investigators to study the epidemiology of campylobacter enteritis [5][6][7]. Grajewski and eolleagues [8] reported a phage-typing scheme designed to provide epidemiological markers for campylobacter strains.…”

Section: Introductionmentioning

confidence: 99%

Extended phage-typing scheme forCampylobacter jejuniandCampylobacter coli

Khakhria

Lior

1992

Epidemiol. Infect.

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SUMMARYThe extended phage-typing scheme described for Campylobacter jejuni and Campylobacter coli has established 46 different phage types using 19 typing phages. Altogether 754 campylobacter isolates, 672 C. jejuni and 82 C. coli, isolated from human and non-human sources received from 17 different countries were phagetyped. Overall, 80 6 % of the total isolates were typable. Among typable strains, 9 phage types (3, 5, 10, 11, 18, 19, 23, 26 and 44) represented 57-0 % of the strains, 21P3 % of the strains belonged to another 37 phage types and the remaining 2f3 % of isolates were designated atypical. The most common phage type 11 (140/754) was frequently observed among C. jejuni isolates from human (113/561) and nonhuman sources (18/ 111), whereas type 44 was frequent among C. coli isolates from human (22/59) and from non-human sources (8/23). A study of the animal hostassociations of common phage types showed that contaminated cattle and poultry appear to be the most common sources of human infection. The greatest variety of phage types was observed in Canada (24 phage types), followed by Portugal (17 types) and the UK (14 types), reflecting the larger sample sizes from these countries. Phage type 11 was encountered in 12 different countries and prevalence of other phage types varied from one country to another. The number of isolates typable with the scheme varied from 93-2 % (261/280) in Canada to 61 % (47/77) in Thailand. However, the number and diversity of phage types makes phage typing the method of ehoice in epidemiological studies of campylobacter infections.

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Biotypes, serogroups and antibiotic susceptibility of Campylobacter jejuni and Campylobacter coli in Chile

Cited by 14 publications

References 13 publications

Effects of Subtherapeutic Administration of Antimicrobial Agents to Beef Cattle on the Prevalence of Antimicrobial Resistance in Campylobacter jejuni and Campylobacter hyointestinalis

Effects of Subtherapeutic Administration of Antimicrobial Agents to Beef Cattle on the Prevalence of Antimicrobial Resistance in Campylobacter jejuni and Campylobacter hyointestinalis

Antimicrobial susceptibilities of Campylobacter jejuni and Campylobacter coli isolated in Sweden: a 10-year follow-up report

Extended phage-typing scheme forCampylobacter jejuniandCampylobacter coli

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