title: Biotypes, serogroups and antibiotic susceptibility of Campylobacter jejuni and Campylobacter coli in Chile.
abstract: Phenotypic markers were studied in 105 strains of thermophilic campylobacters isolated from human beings, animals and drinking water in Santiago, Chile. The strains were identified as Campylobacter jejuni (n = 49) and Campylobacter coli (n = 56). Biotypes I and II (Lior schema) accounted for 96% C. jejuni isolates, the other 4% being biotype IV but the two biotypes of C. coli were about equally represented. A total of 28 serogroups (Lior's heat-labile antigens) were identified. Lior 13, 9, 79, 2 and 4 were prevalent among the C. jejuni, while Lior 8, 21 and 29/75 were prevalent among the C. coli isolates. These serogroups accounted for 73% all isolates. The distribution of biotypes and serogroups in patients and asymptomatic persons were similar. Human campylobacters were often resistant to ampicillin (31%) but sensitive to erythromycin and furazolidone. Swine C. coli isolates proved resistant to streptomycin (46%), tetracycline (38%) and erythromycin (15%). Determination of phenotypic and serological characters provides valuable epidemiological markers in the study of campylobacter infections.
authors.affiliation: Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago.
authors.forename: G
authors.initials: G
authors.lastname: Figueroa
authors.forename: M
authors.initials: M
authors.lastname: Troncoso
authors.forename: H
authors.initials: H
authors.lastname: Galeno
authors.forename: V
authors.initials: V
authors.lastname: Soto
authors.forename: M S
authors.initials: MS
authors.lastname: Toledo
mesh_terms: D000818:Animals; D015373:Bacterial Typing Techniques; D002167:Campylobacter / Q000145:classification* / Q000302:isolation & purification; D002168:Campylobacter fetus / Q000145:classification / Q000302:isolation & purification; D002677:Chile; D004352:Drug Resistance, Microbial; D006801:Humans; D008826:Microbial Sensitivity Tests; D011446:Prospective Studies; D012703:Serotyping; D013045:Species Specificity; D013997:Time Factors