Study on the correlation between the incidence of human brucellosis and natural and social factors in Northwest China
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摘要:
目的 描述西北地区布鲁氏菌病(简称布病)的流行特征,探索其发病率与自然和社会因素的相关性。 方法 收集全国2004—2015年布病监测数据、西北5省2004—2015年布病报告数据及自然和社会因素资料,描述布病的时间分布特征,采用主成分回归分析探索各因素对发病率的影响。 结果 2004—2015年间西北5省布病发病率逐年升高,且整体高于全国水平。每年5—8月为发病高峰。牧业总产值、地区生产总值、牛肉牛奶产量与布病发病率呈正相关,牛期末数量与布病发病率呈负相关。 结论 西北地区布病发生率较全国同期水平高,地区生产总值、牧业总产值、牛肉牛奶产量等社会因素对发病率有影响,春夏回暖季尽早防控,控制养殖规模,对于控制布病疫情具有重要意义。 Abstract:Objective To describe the epidemiology of Brucellosis in northwest China and to explore the association of incidence with natural and social factors. Methods The national surveillance data of brucellosis from 2004 to 2015, the report data of brucellosis from five Provinces in Northwest China from 2004 to 2015 and the data of natural and social factors were collected to describe the temporal distribution characteristics of brucellosis. The principal component regression analysis was used to explore the influence of various factors on the incidence of brucellosis. Results From 2004 to 2015, the incidence of brucellosis in northwest five Provinces increased year by year, and was higher than the national level. The incidence peak was from May to August every year. The total value of livestock production, regional GDP and the yield of beef and milk were positively correlated with the incidence of disease, while the number of cattle at the end of the period was negatively correlated with the incidence of disease. Conclusions The incidence of brucellosis in Northwest China is higher than that in the same period of the country. Social factors such as regional GDP, the total value of livestock production, beef and milk production have an impact on the incidence of brucellosis. Prevention and control of brucellosis as early as possible in spring and summer warm season and control of breeding scale are of great significance for the control of brucellosis epidemic. -
Key words:
- Brucellosis /
- Natural factors /
- Social factors /
- Correlation study
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表 1 2004—2015年中国西北地区人间布病发病率与自然因素和社会因素相关分析
Table 1. Correlation analysis results of human brucellosis incidence and natural and social factors in Northwest China from 2004 to 2015
发病率影响因素 陕西省 甘肃省 宁夏回族自治区 青海省 新疆维吾尔自治区 r值 P值 r值 P值 r值 P值 r值 P值 r值 P值 平均气温(0.1 ℃) - - - - - - - - - 降水量(0.1 mm) - - - - 0.598 0.040 - - - - 平均风速(0.1 m/s) - - - - - - - - - - 牛期末数量(万头) - - - - 0.839 0.001 - - - - 牛肉产量(万吨) - - 0.713 0.009 0.807 0.002 - - 0.864 <0.001 牛奶产量(万吨) 0.641 0.025 - - 0.875 0.000 - - - - 牧业总产值(亿元) 0.592 0.042 0.807 0.002 0.806 0.002 0.688 0.013 0.878 <0.001 农业用水总量(亿立方米) 0.682 0.015 - - -0.646 0.023 - - 0.776 0.003 地区生产总值(亿元) 0.625 0.030 0.719 0.008 0.811 0.001 0.651 0.022 0.865 <0.001 表 2 中国西北地区2004—2015年布病发病率影响因素主成分提取结果
Table 2. Principal component extraction results of influencing factors of brucellosis incidence in Northwest China from 2004 to 2015
因子载荷 陕西省 甘肃省 青海省 宁夏回族自治区 新疆维吾尔自治区 成分1 牛期末数量-0.966牛肉产量0.926 牛肉产量0.951牛奶产量0.912 地区生产总值0.946牛奶产量0.942牧业总产值0.931 地区生产总值0.979牧业总产值0.977牛肉产量0.963牛奶产量0.961 地区生产总值0.957牧业总产值0.957牛肉产量0.926 成分2 平均风速-0.778降水量0.773 平均气温0.884平均风速0.865 平均风速0.912农业用水总量-0.934 平均气温0.863 牛奶产量0.856平均气温0.776平均风速0.748 成分3 - 农业用水总量0.881 牛肉产量0.864 - - 表 3 中国西北地区2004—2015年布病发病率与影响因素拟合模型
Table 3. Fitting model of brucellosis incidence and influencing factors in Northwest China from 2004 to 2015
地区 变量 β值 sx值 S(β)值 t值 R2 P值 陕西省 成分1 0.689 0.193 0.765 3.575 0.588 0.006 甘肃省 成分1 1.908 0.690 0.679 2.767 0.518 0.024 青海省 成分1 0.256 0.142 0.491 1.801 0.405 0.109 宁夏回族自治区 成分1 11.183 1.837 0.796 6.087 0.846 <0.001 新疆维吾尔自治区 成分1 11.991 1.514 0.921 7.917 0.878 <0.001 -
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