R-plasmid transfer in Salmonella spp. isolated from wastewater and sewage-contaminated surface waters.
A total of 865 Salmonella isolates from wastewaters and sewage-contaminated natural waters were tested for antimicrobial resistance by using NR10 medium and incubation at 43 degrees C. Of the strains, 12.7% were resistant to one or more of the compounds tested, and 30% transferred resistance to an Escherichia coli recipient. The highest minimal inhibitory concentrations were ca. 1,000 micrograms/ml. Transfer frequencies ranged from 10(-3) to 10(-7).
D000900:Anti-Bacterial Agents / Q000633:toxicity; D004352:Drug Resistance, Microbial; D008826:Microbial Sensitivity Tests; D011815:R Factors; D012475:Salmonella / Q000235:genetics* / Q000302:isolation & purification; D012722:Sewage; D014871:Water Microbiology
D000900:Anti-Bacterial Agents; D012722:Sewage