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Clin Infect Dis. 2004 Jul 15;39 Suppl 1:S7-S10.

Microbiological data for patients with febrile neutropenia.

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Department of Hematology, Rheumatology, and Nephrology, Kinki University School of Medicine, Osaka, Japan.


The pattern of bacterial infections and antimicrobial susceptibility has changed significantly during the past 20-30 years. The causative organisms for bacteremia or fungemia identified at Kinki University Hospital in 1985-1996 were compared with the isolates identified during 1997-2002. The prevalence of gram-negative organisms decreased, whereas the prevalence of gram-positive organisms increased. Staphylococcal species predominated in the second period, accounting for 22% of isolates, and methicillin-resistant Staphylococcus aureus (MRSA) increased from 5% to 14% of isolates. Pseudomonas aeruginosa ranked second, although the prevalence decreased in the second period compared with the first. Candida species were also relatively frequent (11%). Enterococcal species had an 8% prevalence. A comparison of all culture isolates showed that gram-negative isolates still predominated among the general patient population, whereas almost equal prevalence was observed in patients with hematological diseases. MRSA was the organism most frequently isolated in the general patient population, followed by P. aeruginosa. Among staphylococcal species, MRSA accounted for as much as 90% of isolates.

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