Journal List > Ann Clin Microbiol > v.19(1) > 1078552

Mun, Lee, Park, Chung, Seo, Mun, and Lee: Two Cases of Medical Device-Related Corynebacterium striatum Infection: A Meningitis and A Sepsis

Abstract

Corynebacterium striatum is a commonly isolated contaminant in the clinical microbiology. However, it can be an opportunistic pathogen in immunocompromised and even immunocompetent hosts. The increasing prevalence of C. striatum infection has been associated with immunosuppression and prosthetic devices. We report a case of meningitis with cerebrospinal fluid drainage and a case of catheter-related bloodstream infection caused by C. striatum. The isolates were identified as nondiphtherial Corynebacterium species by VITEK 2 (bioMérieux, France) anaerobe and Corynebacterium card. The final identification by 16S rRNA gene sequencing analysis was C. striatum with 99.7% identity and 99.6% identity with C. striatum ATCC 6940, respectively. Both strains were sensitive to vancomycin and gentamicin, but multi-drug-resistant to ciprofloxacin, penicillin, erythromycin and imipenem.

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Table 1.
Identification of the isolates
Isolate No. Culture site Phenotypic method (VITEK 2) 16S rRNA gene analysis
Strain 1. CSF and drainage tip Corynebacterium striatum Corynebacterium striatum
Strain 2. Catheter blood and peripheral blo ood 1 st Corynebacterium amycolatum 2nd Corynebacterium striatum Corynebacterium striatum
Table 2.
Antimicrobial susceptibility test of the isolates
Antibiotics MIC (μ g/mL)
Strain 1 Strain 2 CLSI interpretive criteria
    S I R
Penicillin >32 >32 ≤1 2 ≥4
Imipenem >32 >32 ≤4 8 ≥16
Ciprofloxacin >32 >32 ≤1 2 ≥4
Erythromycin 4 4 ≤0.5 1 ≥2
Gentamicin 0.06 4 ≤4 8 ≥16
Vancomycin 0.75 0.75 ≤2    

Abbreviations: MIC, minimal inhibitory concentration; CLSI, Clinical and Laboratory Standards Institute; S, susceptible; I, intermediate; R, resistant.

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