Analysis of Reporting Time for Identification of Methicillin-Resistant Staphylococcus aureus Carriers Using ChromID MRSA

作者：Lee Yirang; Kim Jae Seok^*; Kim Han Sung; Kim Hyun Soo; Song Wonkeun; Lee Kyu Man

来源：Annals of Laboratory Medicine, 2014, 34(3): 240-242.

DOI：10.3343/alm.2014.34.3.240

• Methicillin-resistant Staphylococcus aureus
• Chromogenic
• ChromID MRSA
• Surveillance
• Colonization
• Detection
• Time

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, respeatively, 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.

• 出版日期2014-5