Antimicrobial resistance of community-acquired bloodstream isolates of viridans group streptococci

Infections due to antimicrobial-resistant viridans group streptococci are increasing. The present study was done to determine the frequency of antibiotic resistance among community-acquired viridans group streptococci isolated from blood cultures and to identify the risk factors associated with acqu...

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Bibliographic Details
Published in:Infection 2006-12, Vol.34 (6), p.339-341
Main Authors: Yap, R L, Mermel, L A, Maglio, J
Format: Article
Language:English
Subjects:
Adolescent
Adult
Aged
Aged, 80 and over
Antibiotic resistance
Antibiotics
Bacteremia - drug therapy
Bacteremia - epidemiology
Bacteremia - microbiology
Child
Child, Preschool
Community-Acquired Infections - epidemiology
Community-Acquired Infections - microbiology
Drug Resistance, Multiple, Bacterial
Female
Humans
Infant
Male
Microbial Sensitivity Tests
Middle Aged
Rhode Island - epidemiology
Risk Factors
Streptococcus
Viridans Streptococci - drug effects
Viridans Streptococci - pathogenicity
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Summary:Infections due to antimicrobial-resistant viridans group streptococci are increasing. The present study was done to determine the frequency of antibiotic resistance among community-acquired viridans group streptococci isolated from blood cultures and to identify the risk factors associated with acquiring antibiotic-resistant viridans group streptococci. Twenty-eight community-acquired viridans group streptococcal isolates were recovered from 27 patients, of which 89%, 86%, 79%, 61%, and 39% were susceptible to ceftriaxone, clindamycin, tetracycline, penicillin, and erythromycin, respectively; 100% were susceptible to levofloxacin and vancomycin. Among the patients with previous antibiotic use, 73% had penicillin non-susceptible viridans group streptococci, compared with 18% who did not receive prior antibiotics (p = 0.006). Patients with and without prior antibiotic use, 27% and 0%, respectively, had ceftriaxone non-susceptible viridans group streptococci isolates, respectively (p = 0.05). Patients with and without prior antibiotic use, 45% and 6%, respectively, had tetracycline non-susceptible viridans group streptococci isolates, respectively (p = 0.02). No other risk factors for isolation of non-susceptible viridans group streptococci were identified.
ISSN:0300-8126
1439-0973
DOI:10.1007/s15010-006-6656-5