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epidemiology of antimicrobial resistance among gram-negative organisms recovered from patients in a multistate network of long-term care facilities.we identified 1,805 gram-negative organisms in cultures of urine samples obtained over a 10-month period from residents of 63 long-term care facilities. the prevalence of fluoroquinolone resistance in escherichia coli was 51% (446 of 874 isolates), whereas the prevalences of ceftazidime and imipenem resistance in klebsiella species were 26% and 6% (84 and 19 of 323 isolates), respectively. the prevalence of resistance varied significantly by facility type, size, and geographic location.200919566445
prevalence of antimicrobial resistance among urinary tract pathogens isolated from female outpatients across the us in 1999.in the united states, trimethoprim-sulphamethoxazole (tmp-smx) is the recommended first-line treatment for uncomplicated urinary tract infections (utis) in females, in regions with resistance rates of <10-20%. unfortunately, current data on regional resistance is often not readily available to physicians and regional variability in resistance remains largely unknown. this report presents antimicrobial susceptibility data for tmp-smx and three other commonly tested antimicrobials organized by sta ...200111516934
experience with detailed surveillance of nosocomial infection.infection rates have been determined in a 332 bed university hospital using an efficient surveillance program. this computerized program analyzed, summarized and returned infection reports in six days. the efficiency rate of this system was 80 per cent as determined by prevalence survey. the mean nosocomial infection rate for the 12 month study period was 10.8 per cent. neurology, medicine, neurosurgery, surgery and urology ahd the highest attack rates. urinary tract infections composed 44 per c ...19751129686
longitudinal trends in antimicrobial susceptibilities across long-term-care facilities: emergence of fluoroquinolone resistance.antibiotic resistance in the longterm-care facility (ltcf) setting is of increasing concern due to both the increased morbidity and mortality related to infections in this debilitated population and the potential for transfer of resistant organisms to other healthcare settings. longitudinal trends in antibiotic resistance in ltcfs have not been well described.200515693409
prevalence of ctx-m beta-lactamases in philadelphia, pennsylvania.ctx-m beta-lactamases were thought to be rare in the united states, but a recent study in texas showed that up to 70% of extended-spectrum beta-lactamase (esbl)-containing members of the enterobacteriaceae family were ctx-m positive (j. s. lewis, m. herrera, b. wickes, j. e. patterson, and j. h. jorgensen, antimicrob. agents chemother. 51:4015-4021, 2007). we used pcr to detect ctx-m in all 291 extended-spectrum cephalosporin-resistant gram-negative bacteria isolated in our laboratory during 200 ...200919587301
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