耐甲氧西林金黄色葡萄球菌在加拿大市区收容所中的流行情况。
Prevalence of methicillin-resistant Staphylococcus aureus in a Canadian inner-city shelter.
机构信息
Division of Infectious Diseases.
出版信息
Can J Infect Dis Med Microbiol. 2007 Jul;18(4):249-52. doi: 10.1155/2007/264257.
BACKGROUND
Methicillin-resistant Staphylococcus aureus (MRSA) colonization is increasingly of concern in community settings. However, despite a recent outbreak in Calgary, Alberta, data on the prevalence of MRSA in Canadian communities are lacking. Globally, few studies have been performed in high-risk groups such as inner-city populations.
METHODS
A cross-sectional study of the prevalence of MRSA among residents and staff at three Ottawa, Ontario, shelters was conducted. All participants completed a questionnaire, and provided nasal swabs as well as one of rectal, anal or groin swabs.
RESULTS
Among 84 participants, the prevalence of MRSA colonization was 2.4%. Among the resident subgroup, the prevalence was 4.5%, while no MRSA isolates were found among 40 staff participants. All isolates were USA100 (CMRSA-2) subtypes.
CONCLUSIONS
The prevalence of MRSA colonization among residents is higher than baseline population rates, but is consistent with other inner-city populations. Although community outbreaks of USA300 and USA400 strains are increasingly reported, movement of nosocomial strains (ie, USA100 [CMRSA-2]) into communities remains an important avenue in the spread of MRSA and underscores the importance of nosocomial MRSA control.
背景
耐甲氧西林金黄色葡萄球菌（MRSA）在社区环境中的定植越来越令人担忧。然而，尽管艾伯塔省卡尔加里最近爆发了一起疫情，但加拿大社区中 MRSA 的流行情况数据仍缺乏。在全球范围内，很少有研究针对像城市内人群这样的高危群体进行。
方法
对安大略省渥太华的三个避难所的居民和工作人员中 MRSA 的流行率进行了横断面研究。所有参与者都完成了一份问卷，并提供了鼻腔拭子以及直肠、肛门或腹股沟拭子中的一个。
结果
在 84 名参与者中，MRSA 定植的流行率为 2.4%。在居民亚组中，流行率为 4.5%，而在 40 名工作人员参与者中没有发现 MRSA 分离株。所有分离株均为 USA100（CMRSA-2）亚型。
结论
居民中 MRSA 定植的流行率高于基线人群率，但与其他城市内人群一致。尽管越来越多的报道称 USA300 和 USA400 菌株的社区暴发，但医院菌株（即 USA100[CMRSA-2]）向社区的传播仍然是 MRSA 传播的一个重要途径，突显了医院内 MRSA 控制的重要性。
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