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目的探讨成都地区腹泻婴幼儿轮状病毒检出率与气象因素的关系,为预测轮状病毒的流行和预防控制提供依据。方法收集2011.8-2013.6成都地区婴幼儿腹泻粪便样品共465份,采用RT-PCR检测轮状病毒,并收集同期成都市月度气象资料(气温、相对湿度、降雨量)。使用SPSS21.0对各季节检出率进行卡方检验,对轮状病毒检出率与各气象因素进行Pearson相关分析和多重线性回归分析,建立回归模型。结果冬季轮状病毒检出率高于夏秋两季,夏季检出率为四季最低,而温度为影响检出率的主要因素,温度每上升1℃,检出率下降1.402个百分比。结论成都地区轮状病毒感染主要发生在冬春两季,温度与检出率呈负相关,是影响当地轮状病毒感染的主要气象因素。
Objective To investigate the relationship between the detection rate of rotavirus in infants and young children in diarrhea and the meteorological factors in Chengdu area and provide the basis for predicting the epidemic and prevention and control of rotavirus. Methods A total of 465 samples of diarrhea in infants and young children in Chengdu area from August 2011 to June 2013 were collected. The rotavirus was detected by RT-PCR and monthly meteorological data (temperature, relative humidity and rainfall) of Chengdu were collected. SPSS21.0 was used to carry out chi-square test on the detection rate of each season. Pearson correlation analysis and multiple linear regression analysis were performed on the detection rate of rotavirus and the meteorological factors, and regression model was established. Results The detection rate of rotavirus in winter was higher than that in summer and autumn. The detection rate in summer was the lowest in four seasons while the temperature was the main factor affecting the detection rate. When the temperature was increased by 1 ℃, the detection rate decreased by 1.402%. Conclusion The rotavirus infection in Chengdu mainly occurs in winter and spring, and the temperature is negatively correlated with the detection rate. It is the main meteorological factor affecting the rotavirus infection in the area.