Clustering of Staphylococcus aureus carriage among kindergarten children in Liuzhou
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摘要:
目的 探讨柳州市幼儿园儿童金黄色葡萄球菌(金葡菌)携带的聚集性及影响因素,为预防和控制金葡菌在学校儿童中的传播提供重要依据。 方法 2018年4—6月,对柳州市分层整群抽取的1 702名幼儿园儿童进行双侧鼻拭子采样,对其家长进行问卷调查,采用随机效应Logistic回归分析金葡菌携带的聚集性及影响因素。 结果 儿童金葡菌携带率为16.3%(277/1 702)。随机效应Logistic回归分析表明,金葡菌携带在班级水平的随机效应具有统计学意义(Z=2.12,P<0.01),提示具有班级聚集性;影响因素分析提示,6~7岁(OR=2.18,95%CI=1.45~3.27)和5岁(OR=1.65,95%CI=1.08~2.50)儿童金葡菌携带率高于3~4岁儿童,近1年有抗生素服用史(OR=1.45,95%CI=1.05~2.01)和近1年有皮肤软组织感染史(OR=1.36,95%CI=1.04~1.79)与儿童金葡菌携带均呈正相关(P值均<0.05)。 结论 幼儿园儿童金葡菌携带存在明显的班级聚集性,年龄、抗生素服用史和皮肤软组织感染是影响儿童金葡菌携带的重要影响因素。 Abstract:Objective To explore clustering and risk factors of Staphylococcus aureus (S. aureus) carriage among kindergarten children in Liuzhou. Methods Two-sided nasal swabs were collected from 1 702 children in Liuzhou from April to June 2018. Parents of all the children were investigated by questionnaires. The random-effect Logistic regression was used to analyze the clustering and risk factors of S. aureus carriage. Results The carriage rate of S. aureus among kindergarten children was 16.3%. The random-effect Logistic regression model indicated that the class-level random effect of S. aureus carriage among children was statistically significant(Z=2.12, P<0.01). Children aged 6 to 7 years (OR=2.18, 95%CI=1.45-3.27) and 5 years (OR=1.65, 95%CI=1.08-2.50) had higher carriage rates of S. aureus than those aged 3-4 years. The history of antibiotic using (OR=1.45, 95%CI=1.05-2.01) and skin and soft tissue infections (OR=1.36, 95%CI=1.04-1.79) in the previous year were risk factors of S. aureus carriage among children. Conclusion The class-level clustering of S. aureus carriage is observed in healthy children. Age, history of antibiotic usage and history of skin and soft tissue infections are associated with risk of S. aureus carriage among preschool children. -
Key words:
- Staphylococcus aureus /
- Regression analysis /
- Child /
- Infection
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表 1 不同组别儿童金葡菌携带两水平零模型分析
Table 1. Two-level zero model of S.aureus carriage in children with different characteristics
分层变量 人数 固定效应 随机效应 截距 标准误 Z值 P值 效应值 标准误 Z值 P值 ICC/% 性别 男 883 -1.78 0.14 -12.95 < 0.01 0.38 0.20 1.84 0.06 10.4 女 819 -1.77 0.14 -12.40 < 0.01 0.43 0.20 2.10 0.05 11.6 年龄/岁 3~4 621 -2.36 0.25 -9.61 < 0.01 0.88 0.49 1.78 0.08 21.1 5 463 -1.60 0.16 -10.18 < 0.01 0.16 0.17 0.93 0.35 4.5 6~7 618 -1.35 0.12 -11.20 < 0.01 0.09 0.10 0.93 0.35 2.8 地区 市区 620 -1.67 0.13 -12.81 < 0.01 0.07 0.11 0.67 0.50 2.1 郊区 1 082 -1.85 0.17 -10.92 < 0.01 0.63 0.26 2.42 0.16 16.1 学校类型 公立 1 007 -1.71 0.13 -12.85 < 0.01 0.28 0.15 1.87 0.06 7.8 私立 695 -1.88 0.19 -9.82 < 0.01 0.53 0.26 2.00 0.05 13.8 合计 1 702 -1.78 0.11 -15.95 < 0.01 0.38 0.14 2.76 0.01 10.4 表 2 儿童金葡菌携带影响因素两水平Logistic回归模型分析(n=1 702)
Table 2. Two-level Logistic model of influencing factors of S.aureus carriage in children(n=1 702)
截距与自变量 β 标准误 Z值 P值 OR(OR值95%CI) 截距 -2.58 0.21 -12.12 < 0.01 0.08(0.05~0.12) 年龄/岁 3~4 1.00 5 0.50 0.21 2.32 0.02 1.65(1.08~2.50) 6~7 0.78 0.21 3.73 < 0.01 2.18(1.45~3.27) 近1年抗生素服用史 无 1.00 有 0.37 0.16 2.26 0.02 1.45(1.05~2.01) 近1年皮肤软组织感染史 无 1.00 有 0.31 0.14 2.25 0.03 1.36(1.04~1.79) 随机部分 水平2方差 0.22 0.10 2.12 0.03 水平1尺度参数 1.00 - - - -
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