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KMID : 1100720140340030240
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Annals of Laboratory Medicine
2014 Volume.34 No. 3 p.240 ~ p.242
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Analysis of Reporting Time for Identification of Methicillin-Resistant Staphylococcus aureus Carriers Using ChromID MRSA
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Lee Yi-Rang
Kim Jae-Seok
Kim Han-Sung
Kim Hyun-Soo
Song Won-Keun
Lee Kyu-Man
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Abstract
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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.
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KEYWORD
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Methicillin-resistant Staphylococcus aureus, Chromogenic, ChromID MRSA, Surveillance, Colonization, Detection, Time
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