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pp.217-223
To investigate antimicrobial susceptibility and relationships of the multidrug resistance and phage types of 49 Salmonella enterica serovar Typhimurium isolated from diarrhea patients in Seoul between 1999 and 2002, we analyed stranis by serotyping, antimicrobial susceptibility test and phage typing. Out of 2,705 samples examined for the causative agent from diarrhea patients, total of 512 isolates were confirmed to be genus Salmonella. Out of 512 isolates, 49 isolates(9.6%) were identified as S. Typhimurium. All of the S. Typhimurium strains represented 100% susceptibility to ceftriaxone, cefoxitin, amikacin and ciprofloxacin and were over 90% susceptibility to gentamicin, cephalothin and kanamycin, but were resistant to tetracycline(75.5%), streptomycin(59.2%), sulfonamides(55.1%), ticarcillin(36.7%), ampicillin( 28.6%), and chloramphenicol(20.4%). Out of 49 S. Typhimurium, only 3 isolates(20.4%) were resistant to one drug, 6 isolates(12.2%) to two drugs and 12 isolates(24.5%) to 3 drugs, 1 isolate(2.0%) to 4 drugs, 2 isolates (4.1%) to 5 drugs, and 6 isolates(12.2%) to 6 drugs and 5 isolates (10.2%) to 7 drugs. Out of 49 S. Typhimurium, 10 isolates(20.4%) were DT195, 5 isolates(10.2%) were DT193 and DT206, 4 isolates(8.2%) were DT104L, DT146, DT203 and RDNC, respectively. Phage types observed the resistant patterns of more than 6 drugs were DT104L, DT193, DT194, DT195 and DT67, but those of 3 drugs representing S-S3-TE type was DT195.
