Frequency and Clinical Characteristics of Urinary Tract Infections Caused byStaphylococcus saprophyticus

Abstract

Background: Staphylococcus saprophyticus is the second most common cause of urinary tract infections (UTIs) in young women. As little is known about the incidence of UTIs caused by this organism in Korea, we examined its frequency and clinical characteristics. Methods: We analyzed the frequency of S. saprophyticus among organisms isolated from urine specimens in Wonju Christian Hospital from July 1996 to June 2008 and reviewed clinical characteristics retrospectively. Results: Of 24,277 strains isolated from urine specimens during the past 12 years, 21 (0.09%) were S. saprophyticus. Outpatients were more common in the S. saprophyticus group than in all patients group (12 of 21, 57% vs 5,098 of 24,277, 21%). The incidence of S. saprophyticus in women was the highest in the

Staphylococcus saprophyticus Bacteremia originating from Urinary Tract Infections: A Case Report and Literature Review

“…S. saprophyticus is the second most common uropathogen after Escherichia coli in uncomplicated UTI in females [ 4 ]. A nationwide surveillance study of uncomplicated UTI reported that S. saprophyticus (5.2%) was the second most common uropathogen in the total population, and significantly more common in premenopausal females [ 5 ].…”

“…Similarly, another study reported that the most common uropathogens were E. coli (53.3%) and S. saprophyticus (2.5%) among 4,734 females with uncomplicated UTI in multi-community centers [ 6 ]. A Korean study of 24,277 urinary specimen strains from 1996 to 2008 showed that the most common pathogen was E. coli (23.8%), followed by Enterococcus faecalis (11.0%), Enterococcus faecium (10.8%), Pseudomonas aeruginosa (9.0%), coagulase negative staphylococci (7.7%), Klebsiella pneumoniae (6.6%), Staphylococcus aureus (3.3%), S. saprophyticus (0.1%) [ 4 ]. Contrary to previous foreign studies, the isolation of S. saprophyticus was much less frequent from UTI patients in Korea.…”

“…Because S. saprophyticus is a pathogen of uncomplicated UTI in young women, the isolation rate of the S. saprophyticus may be lower in admitted patients. Therefore, relatively few patients with S. saprophyticus UTI may be included because reports on surveillance for UTI pathogens were performed at tertiary hospitals in Korea [ 2 3 4 ].…”