Molecular epidemiology and clinical significance of Corynebacterium striatum isolated from clinical specimens

Molecular epidemiology and clinical significance of Corynebacterium striatum isolated from clinical specimens Jin Woong Suh,1 Yongguk Ju,2 Chang Kyu Lee,3 Jang Wook Sohn,1,2 Min Ja Kim,1,2 Young Kyung Yoon1,2 1Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea; 2Institute of Emerging Infectious Diseases, Korea University College of Medicine, Seoul, Republic of Korea; 3Department of Laboratory Medicine, Korea University College of Medicine, Seoul, Republic of Korea Purpose: This study investigated the clinical epidemiology, antimicrobial susceptibility, and molecular epidemiology of Corynebacterium striatum isolates.Patients and methods: An observational study was conducted at a university hospital in the Republic of Korea from August to December 2016. All subjects were patients who tested positive for C. striatum clinically. Clinical data were analyzed to evaluate the microbiological and genotypic characteristics of C. striatum strains.Results: Sixty-seven C. striatum isolates recovered from non-duplicated patients were characterized. Patients were classified into three groups according to the infection type: nosocomial infection (71.6%), health care-associated infection (8.7%), and community-acquired infection (18.8%). The most common clinical specimens were urine (35.8%) and skin abscesses (32.8%). Fifty-two (77.6%) isolates showed multidrug resistance, defined as resistance to ≥3 different antibiotic families. All strains were susceptible to vancomycin and linezolid. Resistance to other antibiotics varied: penicillin (n