Analysis of Reporting Time for Identification of Methicillin-Resistant Staphylococcus aureus Carriers Using ChromID MRSA.
10.3343/alm.2014.34.3.240
- Author:
Yirang LEE
1
;
Jae Seok KIM
;
Han Sung KIM
;
Hyun Soo KIM
;
Wonkeun SONG
;
Kyu Man LEE
Author Information
1. Department of Laboratory Medicine, Hallym University College of Medicine, Kangdong Sacred Heart Hospital, Seoul, Korea. jaeseok@hallym.or.kr
- Publication Type:Brief Communication ; Evaluation Studies
- Keywords:
Methicillin-resistant Staphylococcus aureus;
Chromogenic;
ChromID MRSA;
Surveillance;
Colonization;
Detection;
Time
- MeSH:
Humans;
Methicillin-Resistant Staphylococcus aureus/*isolation & purification;
Nasal Cavity/microbiology;
Reagent Kits, Diagnostic;
Sensitivity and Specificity;
Staphylococcal Infections/*diagnosis/microbiology;
Time Factors
- From:Annals of Laboratory Medicine
2014;34(3):240-242
- CountryRepublic of Korea
- Language:English
-
Abstract:
We assessed the reporting times for identification of nasal methicillin-resistant Staphylococcus aureus (MRSA) carriers in 2011 in a university-affiliated hospital using surveillance cultures incubated for 1 and 2 days with ChromID MRSA (bioMerieux, France). Of 2,732 nasal swabs tested, MRSA was detected in 829 (85.6%) and 140 (14.4%) swabs after 1 and 2 days of incubation, respectively, and the median reporting times for positive specimens were 33.7 hr (range, 18.2-156.9 hr) and 108.1 hr (range, 69.8-181.0 hr), respectively. Detection rate after 1-day incubation was 85%. Additional 1-day incubation improved detection rate; however, it prolonged the reporting times of positive specimens approximately up to 4 days because of the need for confirmatory tests such as species identification and susceptibility tests. Following a 2-day culture with ChromID MRSA, rapid confirmatory tests are warranted to reduce delay in identifying MRSA carriers.