Analysis of iodine nutrition monitoring results of pregnant women in Suqian City,Jiangsu Province from 2016 to 2020

<正>Objective To learn about the iodine nutritional status of pregnant women in Suqian City,Jiangsu Province,and to provide evidence for scientific supplementation of iodine for pregnant women.Methods From May 2016 to July 2020,five sampling districts were divided in each county (district) of Suqian City according to the oriationof east,west,south,north and center each year.     

Analysis of surveillance results of iodine deficiency disorders in Fuzhou City,Jiangxi Province from 2017 to 2019

<正>Objective To analyze the surveillance results of iodine deficiency disorders in Fuzhou City, Jiangxi Province,so as to master the iodine nutrition level of key population and evaluate the prevention and treatment effect of iodine deficiency disorders in the city. Methods From 2017 to 2019, counties (districts) under the jurisdiction of Fuzhou City in Jiangxi Province were divided into five sampling areas (east,west,south,north,and central).     

Relationship between Rs1801726 polymorphism of calcium sensing receptor gene and skeletal fluorosis

正Objective To investigate the relationship between single nucleotide polymorphism of the calcium sensing receptor gene(Ca SR)Rs1801726 and skeletal fluorosis.Methods From 2012 to 2013,the Tibetan living area in Guoluo of Qinghai Province,the Mongolian,Russian living area in Hulun Buir City of the Inner Mongolia Autonomous Region and the Kazakh living area in Altay of Xin-     

中国多省市急性冠状动脉综合征住院患者高胆固醇血症患病现况

Objective To estimate the current prevalence, awareness and treatment status of hypercholesterolemia among inpatients with acute coronary syndrome (ACS) in China. Methods Sixty-four hospitals across China, including 32 secondary hospitals and 32 tertiary hospitals were selected for baseline survey. Fifty inpatients diagnosed with ACS were recruited consecutively in each participated hospitals. Retrospective information for 2751 patients were collected, and the prevalence, awareness, and treatment status of hypercholosterolemia among the patients were analyzed. Results (1) Mean age of the patients was 65±11. Sixty-nine percent of the patients were males and 31.2% were females. Among them, 39.4% were diagnosed as ST-segment elevation MI, 8. 8% as non-ST-segment elevation MI and 51.8% as unstable angina. Twenty-seven percent of them had previous ACS history. (2) Hypercholesterolemia was found in 19. 6% ACS patients. Among 7 geographic districts (north China, east China, south China, middle China, northeast, northwest and southwest), the prevalence rate of hypercholesterolemia was highest (24.7%) in east China and lowest (10.0%) in middle China. Significant difference was observed among these areas. (3) Awareness rate of hypercholesterolemia was 12.2% among patients with hypercholesterolemia, with significant difference among various areas. Treatment rate was 66.7% among patients with known hypercholesterolemia, with the highest (83.3%) seen in south China and lowest (0%) in southwest area. (4) The prevalence, awareness rate and treatment rate of hypercholesterolemia were higher in recurrent ACS patients than in those without ACS history. Conclusions Nearly 20% ACS inpatients have hypercholesterolemia. It is essential to pay more attention on the treatment of hypercholesterolemia for the purpose of secondary prevention of cardiovascular disease.     

中国多省市急性冠状动脉综合征住院患者高胆固醇血症患病现况

Objective To estimate the current prevalence, awareness and treatment status of hypercholesterolemia among inpatients with acute coronary syndrome (ACS) in China. Methods Sixty-four hospitals across China, including 32 secondary hospitals and 32 tertiary hospitals were selected for baseline survey. Fifty inpatients diagnosed with ACS were recruited consecutively in each participated hospitals. Retrospective information for 2751 patients were collected, and the prevalence, awareness, and treatment status of hypercholosterolemia among the patients were analyzed. Results (1) Mean age of the patients was 65±11. Sixty-nine percent of the patients were males and 31.2% were females. Among them, 39.4% were diagnosed as ST-segment elevation MI, 8. 8% as non-ST-segment elevation MI and 51.8% as unstable angina. Twenty-seven percent of them had previous ACS history. (2) Hypercholesterolemia was found in 19. 6% ACS patients. Among 7 geographic districts (north China, east China, south China, middle China, northeast, northwest and southwest), the prevalence rate of hypercholesterolemia was highest (24.7%) in east China and lowest (10.0%) in middle China. Significant difference was observed among these areas. (3) Awareness rate of hypercholesterolemia was 12.2% among patients with hypercholesterolemia, with significant difference among various areas. Treatment rate was 66.7% among patients with known hypercholesterolemia, with the highest (83.3%) seen in south China and lowest (0%) in southwest area. (4) The prevalence, awareness rate and treatment rate of hypercholesterolemia were higher in recurrent ACS patients than in those without ACS history. Conclusions Nearly 20% ACS inpatients have hypercholesterolemia. It is essential to pay more attention on the treatment of hypercholesterolemia for the purpose of secondary prevention of cardiovascular disease.     

中国多省市急性冠状动脉综合征住院患者高胆固醇血症患病现况

Objective To estimate the current prevalence, awareness and treatment status of hypercholesterolemia among inpatients with acute coronary syndrome (ACS) in China. Methods Sixty-four hospitals across China, including 32 secondary hospitals and 32 tertiary hospitals were selected for baseline survey. Fifty inpatients diagnosed with ACS were recruited consecutively in each participated hospitals. Retrospective information for 2751 patients were collected, and the prevalence, awareness, and treatment status of hypercholosterolemia among the patients were analyzed. Results (1) Mean age of the patients was 65±11. Sixty-nine percent of the patients were males and 31.2% were females. Among them, 39.4% were diagnosed as ST-segment elevation MI, 8. 8% as non-ST-segment elevation MI and 51.8% as unstable angina. Twenty-seven percent of them had previous ACS history. (2) Hypercholesterolemia was found in 19. 6% ACS patients. Among 7 geographic districts (north China, east China, south China, middle China, northeast, northwest and southwest), the prevalence rate of hypercholesterolemia was highest (24.7%) in east China and lowest (10.0%) in middle China. Significant difference was observed among these areas. (3) Awareness rate of hypercholesterolemia was 12.2% among patients with hypercholesterolemia, with significant difference among various areas. Treatment rate was 66.7% among patients with known hypercholesterolemia, with the highest (83.3%) seen in south China and lowest (0%) in southwest area. (4) The prevalence, awareness rate and treatment rate of hypercholesterolemia were higher in recurrent ACS patients than in those without ACS history. Conclusions Nearly 20% ACS inpatients have hypercholesterolemia. It is essential to pay more attention on the treatment of hypercholesterolemia for the purpose of secondary prevention of cardiovascular disease.     

中国多省市急性冠状动脉综合征住院患者高胆固醇血症患病现况

Objective To estimate the current prevalence, awareness and treatment status of hypercholesterolemia among inpatients with acute coronary syndrome (ACS) in China. Methods Sixty-four hospitals across China, including 32 secondary hospitals and 32 tertiary hospitals were selected for baseline survey. Fifty inpatients diagnosed with ACS were recruited consecutively in each participated hospitals. Retrospective information for 2751 patients were collected, and the prevalence, awareness, and treatment status of hypercholosterolemia among the patients were analyzed. Results (1) Mean age of the patients was 65±11. Sixty-nine percent of the patients were males and 31.2% were females. Among them, 39.4% were diagnosed as ST-segment elevation MI, 8. 8% as non-ST-segment elevation MI and 51.8% as unstable angina. Twenty-seven percent of them had previous ACS history. (2) Hypercholesterolemia was found in 19. 6% ACS patients. Among 7 geographic districts (north China, east China, south China, middle China, northeast, northwest and southwest), the prevalence rate of hypercholesterolemia was highest (24.7%) in east China and lowest (10.0%) in middle China. Significant difference was observed among these areas. (3) Awareness rate of hypercholesterolemia was 12.2% among patients with hypercholesterolemia, with significant difference among various areas. Treatment rate was 66.7% among patients with known hypercholesterolemia, with the highest (83.3%) seen in south China and lowest (0%) in southwest area. (4) The prevalence, awareness rate and treatment rate of hypercholesterolemia were higher in recurrent ACS patients than in those without ACS history. Conclusions Nearly 20% ACS inpatients have hypercholesterolemia. It is essential to pay more attention on the treatment of hypercholesterolemia for the purpose of secondary prevention of cardiovascular disease.     

中国多省市急性冠状动脉综合征住院患者高胆固醇血症患病现况

Objective To estimate the current prevalence, awareness and treatment status of hypercholesterolemia among inpatients with acute coronary syndrome (ACS) in China. Methods Sixty-four hospitals across China, including 32 secondary hospitals and 32 tertiary hospitals were selected for baseline survey. Fifty inpatients diagnosed with ACS were recruited consecutively in each participated hospitals. Retrospective information for 2751 patients were collected, and the prevalence, awareness, and treatment status of hypercholosterolemia among the patients were analyzed. Results (1) Mean age of the patients was 65±11. Sixty-nine percent of the patients were males and 31.2% were females. Among them, 39.4% were diagnosed as ST-segment elevation MI, 8. 8% as non-ST-segment elevation MI and 51.8% as unstable angina. Twenty-seven percent of them had previous ACS history. (2) Hypercholesterolemia was found in 19. 6% ACS patients. Among 7 geographic districts (north China, east China, south China, middle China, northeast, northwest and southwest), the prevalence rate of hypercholesterolemia was highest (24.7%) in east China and lowest (10.0%) in middle China. Significant difference was observed among these areas. (3) Awareness rate of hypercholesterolemia was 12.2% among patients with hypercholesterolemia, with significant difference among various areas. Treatment rate was 66.7% among patients with known hypercholesterolemia, with the highest (83.3%) seen in south China and lowest (0%) in southwest area. (4) The prevalence, awareness rate and treatment rate of hypercholesterolemia were higher in recurrent ACS patients than in those without ACS history. Conclusions Nearly 20% ACS inpatients have hypercholesterolemia. It is essential to pay more attention on the treatment of hypercholesterolemia for the purpose of secondary prevention of cardiovascular disease.     

中国多省市急性冠状动脉综合征住院患者高胆固醇血症患病现况

Objective To estimate the current prevalence, awareness and treatment status of hypercholesterolemia among inpatients with acute coronary syndrome (ACS) in China. Methods Sixty-four hospitals across China, including 32 secondary hospitals and 32 tertiary hospitals were selected for baseline survey. Fifty inpatients diagnosed with ACS were recruited consecutively in each participated hospitals. Retrospective information for 2751 patients were collected, and the prevalence, awareness, and treatment status of hypercholosterolemia among the patients were analyzed. Results (1) Mean age of the patients was 65±11. Sixty-nine percent of the patients were males and 31.2% were females. Among them, 39.4% were diagnosed as ST-segment elevation MI, 8. 8% as non-ST-segment elevation MI and 51.8% as unstable angina. Twenty-seven percent of them had previous ACS history. (2) Hypercholesterolemia was found in 19. 6% ACS patients. Among 7 geographic districts (north China, east China, south China, middle China, northeast, northwest and southwest), the prevalence rate of hypercholesterolemia was highest (24.7%) in east China and lowest (10.0%) in middle China. Significant difference was observed among these areas. (3) Awareness rate of hypercholesterolemia was 12.2% among patients with hypercholesterolemia, with significant difference among various areas. Treatment rate was 66.7% among patients with known hypercholesterolemia, with the highest (83.3%) seen in south China and lowest (0%) in southwest area. (4) The prevalence, awareness rate and treatment rate of hypercholesterolemia were higher in recurrent ACS patients than in those without ACS history. Conclusions Nearly 20% ACS inpatients have hypercholesterolemia. It is essential to pay more attention on the treatment of hypercholesterolemia for the purpose of secondary prevention of cardiovascular disease.     

中国多省市急性冠状动脉综合征住院患者高胆固醇血症患病现况

Objective To estimate the current prevalence, awareness and treatment status of hypercholesterolemia among inpatients with acute coronary syndrome (ACS) in China. Methods Sixty-four hospitals across China, including 32 secondary hospitals and 32 tertiary hospitals were selected for baseline survey. Fifty inpatients diagnosed with ACS were recruited consecutively in each participated hospitals. Retrospective information for 2751 patients were collected, and the prevalence, awareness, and treatment status of hypercholosterolemia among the patients were analyzed. Results (1) Mean age of the patients was 65±11. Sixty-nine percent of the patients were males and 31.2% were females. Among them, 39.4% were diagnosed as ST-segment elevation MI, 8. 8% as non-ST-segment elevation MI and 51.8% as unstable angina. Twenty-seven percent of them had previous ACS history. (2) Hypercholesterolemia was found in 19. 6% ACS patients. Among 7 geographic districts (north China, east China, south China, middle China, northeast, northwest and southwest), the prevalence rate of hypercholesterolemia was highest (24.7%) in east China and lowest (10.0%) in middle China. Significant difference was observed among these areas. (3) Awareness rate of hypercholesterolemia was 12.2% among patients with hypercholesterolemia, with significant difference among various areas. Treatment rate was 66.7% among patients with known hypercholesterolemia, with the highest (83.3%) seen in south China and lowest (0%) in southwest area. (4) The prevalence, awareness rate and treatment rate of hypercholesterolemia were higher in recurrent ACS patients than in those without ACS history. Conclusions Nearly 20% ACS inpatients have hypercholesterolemia. It is essential to pay more attention on the treatment of hypercholesterolemia for the purpose of secondary prevention of cardiovascular disease.     

2016-2018年江西省钩端螺旋体病鼠类动物流行病学调查与分离菌株鉴定

目的 初步了解江西省钩端螺旋体病主要宿主动物鼠类种类构成、带菌率及血清学和分子流行病学特征,为钩体病的防控提供科学依据。方法 2016-2018年选取江西省钩体病4个国家级监测点上饶、上高、上犹及浮梁县作为现场监测地点,开展鼠类种类调查、钩体分离培养工作。利用暗视野显微镜凝集试验和MLST技术对分离菌株进行血清学鉴定和MLST基因分型。结果 共计捕鼠14 387只,平均鼠密度为9.76%,分离菌株64株,鼠类钩体分离率为4.56%。鼠种构成包括黑线姬鼠、褐家鼠、黄毛鼠、黄胸鼠及社鼠5个种类。4个监测点优势鼠种均以黑线姬鼠和黄毛鼠为主。血清群鉴定结果显示:64株菌株隶属于3个血清群,其中黄疸出血群为主要优势血清群,占81.25%,其次是爪哇群和致热群。MLST研究显示:64株菌株隶属于6个ST型别,分别为ST1、ST17、ST92、ST143、ST216和ST224,其中ST1为主要基因型,占76.56%。BioNumerics软件分析显示:64株菌株隶属于6个Clusters,分别对应6个ST型,血清学、MLST基因型分布具有明显地域差异。结论 江西省以黑线姬鼠和黄毛鼠为优势鼠种,黄疸出血群和ST1为江西省钩体病主要流行型别,充分了解江西省钩体病可能的宿主动物以及血清学和分子流行病学特征,对钩体病的预防控制有一定的指导意义。     

百色市消除疟疾考核认证结果分析

目的对百色市消除疟疾考核认证结果进行分析,总结地级市消除疟疾工作经验。方法依据《消除疟疾考核评估方案(2014年版)》以及《广西市级消除疟疾考核评估方案(2016版)》,对百色市本级进行考核评估,并随机抽取辖区内2个县(市、区)开展消除疟疾考核复核评估,对考核认证结果进行分析。结果百色市本级消除疟疾考核评估得分为95.80分;随机抽取田东县、靖西市进行复核认证,复核分数分别为94.70、90.60分;按照各部分权重0.4、0.3、0.3,百色消除疟疾考核认证最后得分为93.91分,达到了国家消除疟疾考核评估规定的需达到85分以上的标准。结论百色市通过广西壮族自治区区级消除疟疾考核认证,今后应继续做好消除后监测,以巩固消除疟疾成果。     

灰色模型在新疆维吾尔自治区伊宁市肺结核发病率预测中的应用

目的 通过建立灰色模型拟合肺结核的发病率,对新疆维吾尔自治区伊宁市肺结核的流行趋势进行预测,为当地结核病防控工作提供参考依据。方法 根据2012—2018年新疆维吾尔自治区伊宁市肺结核报告发病资料,应用灰色模型(grey models,简称“GM模型”)拟合肺结核的发病率。2012—2018年伊宁市肺结核发病率依次为:151.56/10万(781/515299)、134.60/10万(721/535668)、146.51/10万(820/559691)、152.00/10万(893/587507)、142.64/10万(782/548241)、177.85/10万(992/558860)、196.81/10万(1124/571122),通过矩阵实验室(Matrix Laboratory,简称“MATLAB”)软件(美国MathWorks公司出品)建立一阶微分方程的GM模型,计算后验差比值C和小误差概率P检验GM(1,1)模型的拟合效果。若C值<0.5且P值>0.8,说明模型拟合效果合格,可以进行外推预测;反之,则对模型进行残差修正。结果 模型拟合效果合格,模型的平均残差为0.195,平均相对误差为4.553%,小误差概率P值为0.83,后验差比值C值为0.43;2019—2021年伊宁市肺结核发病率预测值分别为203.28/10万、218.87/10万、235.66/10万。结论 伊宁市2019—2021年的肺结核发病率可能会以年发病率7.67%的增幅继续增加,应继续加强对结核病的防控工作,降低结核病对人群的危害。     

新的具有高度多态性的日本血吸虫微卫星位点的鉴定

目的 从基因组序列中选择和设定新的、可用于研究日本血吸虫多态性的微卫星位点。 方法 672个日本血吸虫标本取自安徽、江西、湖南、湖北和四川等5省的7个流行区现场。根据日本血吸虫基因组数据库中的初始数据设计引物,对标本的17个全新的日本血吸虫微卫星位点进行分析。用GenMapper 4.0 软件（Applied Biosystems）进行初始数据处理,用GenClone 1.0软件计算种群内各标本的遗传距离;用GenAlEx6软件统计等位基因的变化;用GenClone 1.0 软件计算种群内各标本的遗传距离;用UPGMA 谱系图分析种群间遗传距离。 结果 17个微卫星位点均呈现多态性。对江西都昌种群的这17个位点进行分析,标本之间的遗传距离大多为25～32,显示江西都昌种群内各个标本之间的遗传差异明显。对7个地区种群分析的结果显示种群间的差异较为明显。类平均法系统聚类分析（UPGMA） 谱系图显示,江西都昌、安徽铜陵、湖北沙市和湖南常德的种群同为一簇,其遗传距离为0.017 8～0.036 3;安徽贵池和湖南岳阳的为另外一簇,其遗传距离为0.024 7;而四川西昌单独为一簇,与其他两簇的遗传距离为0.019 2～0.069 3。 结论 选择的17个微卫星位点可作为研究日本血吸虫种群遗传学的有效标记,并揭示中国大陆该虫种存在着复杂的遗传变异。     

豫皖闽浙4省溪蟹并殖吸虫囊蚴核糖体ITS2和线粒体CO1基因序列分析

目的分析我国豫皖闽浙4省5地区溪蟹并殖吸虫囊蚴核糖体内转录间隔区2 (ITS2)和线粒体细胞色素c氧化酶亚基I (CO1)基因序列,鉴定并殖吸虫囊蚴虫种。方法 2018年10月至2019年9月,于安徽省休宁县蓝田镇、浙江省永嘉县、河南省济源市邵原镇、福建省政和县及漳州市等5个调查点采集溪蟹,分离溪蟹中并殖吸虫,提取囊蚴基因组DNA,PCR扩增核糖体ITS2和线粒体C01基因,测序。采用DNA Star拼接各基因测序结果,并进行各序列间的比对,同时与GenBankTM中并殖吸虫基因进行BLAST比对。基于ITS2、CO1序列,以肝片吸虫为外群,采用邻接法构建系统进化树。结果安徽省休宁县蓝田镇、浙江省永嘉县、河南省济源市邵原镇、福建省政和县及漳州市等5个调查点的溪蟹并殖吸虫囊蚴阳性率分别为82%(49/60)、41%(29/70)、55%(41/74)、65%(41/63)和45%(32/71)。ITS2、CO1扩增长度依次约为500 bp、450 bp。安徽省休宁县蓝田镇和浙江省永嘉县溪蟹并殖吸虫囊蚴ITS2、CO1与卫氏并殖吸虫(KC417492.1,AF219379.2)的相似性最高,分别为99%~100%、96%~99%,均与卫氏并殖吸虫聚为一支;河南省济源市邵原镇溪蟹并殖吸虫囊蚴ITS2、CO1与斯氏并殖吸虫(KX129924.1、MK568551.1)的相似性最高,分别为98%~100%、95%~99%,均与斯氏并殖吸虫聚为一支;福建省政和县溪蟹并殖吸虫囊蚴ITS2与斯氏并殖吸虫(KX129924.1)的相似性最高,为98%~100%,与斯氏、宫崎并殖吸虫聚为一大支(两虫种分支不明显),CO1与宫崎并殖吸虫(AY618823.1、AY618834.1)的相似性最高,为91%~94%,与宫崎并殖吸虫聚为一支,与斯氏并殖吸虫分支明显;福建省漳州市溪蟹并殖吸虫囊蚴ITS2与卫氏并殖吸虫(KC417492.1)的相似性最高,达100%,CO1与三平正并殖吸虫(AF159595.1)的相似性最高,为97%~99%,与三平正并殖吸虫聚为一支。结论 4省5地区溪蟹并殖吸虫囊蚴PCR扩增检出CO1与卫氏、斯氏、宫崎和三平正并殖吸虫高度同源。并殖吸虫CO1可作为并殖吸虫虫种鉴别的潜在分子标记。     

2020年全国血吸虫病疫情通报

本文通报了2020年全国血吸虫病疫情,并对全国血吸虫病预防控制工作数据和国家血吸虫病监测点疫情监测数据进行了汇总和分析。截至2020年底,全国12个血吸虫病流行省（直辖市、自治区）中,上海、浙江、福建、广东、广西等5个省（直辖市、自治区）继续巩固血吸虫病消除成果,四川、江苏省维持传播阻断标准,云南、湖北、安徽、江西、湖南等5个省维持传播控制标准。全国共有450个血吸虫病流行县（市、区）、28 376个流行村,流行村总人口7 137.04万人;全国450个流行县（市、区）中,337个（74.89%）达到血吸虫病消除标准、98个（21.78%）达到传播阻断标准、15个（3.33%）达到传播控制标准。2020年,全国尚存晚期血吸虫病患者29 517例。2020年,全国共开展询检查病11 117 655人,阳性1 798 580人;开展血检查病5 263 082人,阳性83 179人;开展病原学检查273 712人,阳性3人,其中急性血吸虫病病例1例。2020年,全国共有19 733个流行村开展了钉螺分布调查,7 309个村查出钉螺,占调查总数的37.04%,新查出 15个有螺村;共查螺736 984.13 hm2,查出有螺面积206 125.22 hm2,其中新发现有螺面积1 174.67 hm2,感染性钉螺面积1.96 hm2。2020年,我国血吸虫病流行区现有存栏耕牛544 424头,血检查病147 887头,阳性326头;开展粪检查病130 673头,未发现粪检阳性耕牛。2020年,全国共治疗血吸虫病患者19 214例,扩大化疗964 103人·次;扩大化疗耕牛266 280头·次;开展药物灭螺总面积136 141.92 hm2,实际药物灭螺71 980.22 hm2,环境改造灭螺1 464.03 hm2。2020年全国血吸虫病监测点中,居民和耕牛平均血吸虫感染率均为0,未发现感染性钉螺。疫情数据分析显示,全国血吸虫病呈低度流行水平,全国如期实现《“十三五”全国血吸虫病防治规划》目标,但局部地区疫情有所反弹,仍需开展血吸虫病精准防控、强化血吸虫病疫情及风险监测,在巩固血吸虫病防治成果的基础上稳步推进消除进程。     

湖北钉螺种群内AFLP分子标记遗传变异分析

目的 探讨湖北钉螺种群内的遗传变异及其程度。方法 采用扩增片段长度多态性(AFLP)分子标记技术对9省(云南、四川、广西、福建、湖南、湖北、江西、安徽、江苏)13种群湖北钉螺基因组DNA进行扩增,分析钉螺种群内的遗传变异。结果湖北钉螺13种群AFLP扩增片段位点数为403~472,江西星子钉螺种群内遗传多样性较高,多态位点频率、Nei’s基因多样性指数和Shannon’s信息指数分别为93.2%、0.345和0.510,而广西宜州钉螺种群内遗传多样性较低,以上3指标分别为55.8%、0.191和0.287;广西宜州钉螺种群内的相似性较大,相似系数(中位数)为0.904,而江苏丹徒钉螺种群内的相似性较低,相似系数(中位数)为0.748;13种群内的遗传变异差异显著(P<0.01)。结论 我国广泛分布的湖北钉螺,种群内存在一定程度的遗传变异。不同地区湖北钉螺种群内遗传变异程度不同,有的相差较大。     

江西省致病性钩端螺旋体血清学和分子流行病学研究

目的 对2013年以来江西省致病性钩端螺旋体进行血清学、基因分型分析,以了解江西省钩端螺旋体血清学和分子流行病学特征。方法 对27株钩端螺旋体进行暗视野显微镜凝集试验确定血清群。PCR扩增16S rRNA基因、测序,确定基因种。利用MLST(multilocus sequence typing)研究进行基因分型分析,并应用BioNumerics (Version5.10)软件进行聚类分析。结果 血清群鉴定:27株菌株隶属于4个血清群,其中黄疸出血群为主要优势血清群,占59.26%,其次依次是爪哇群25.92%、澳洲群7.41%和巴达维亚群7.41%。基因种鉴定:27株菌株隶属于L. interrogans和L. borgpetersenii 2个致病性基因种,L. interrogans为江西省主要优势型别,占77.78%。MLST研究显示27株菌株隶属于5个ST型别,其中ST1为主要基因型,占59.26%。BioNumerics软件分析:27株菌株分为5个Clusters对应于5个ST型,MLST基因型别具有明显的地域性特征,而年代间变化不明显。结论 黄疸出血群为江西省主要流行血清群,L. interrogan为主要致病基因种,ST1为主要基因型,充分了解江西省钩体病血清学和分子流行病学特征将对钩体病防控和疫苗制备有一定的指导意义。     

气候变化对我国微小扇头蜱分布区的影响

目的 分析影响我国微小扇头蜱地理分布的环境因子及微小扇头蜱在我国的潜在适生区,分析气候变化对我国微小扇头蜱分布的影响.方法 检索我国微小扇头蜱地理分布相关的国内外公开发表文献,提取地理位置信息.结合环境因子,应用ArcGIS 10.7软件和最大熵模型,对微小扇头蜱在我国的适生区分布和影响其分布的主导环境因子进行预测.结...     

广西壮族自治区和云南省输入性疟疾患者住院费用及其影响因素研究

目的 对广西壮族自治区和云南省输入性疟疾病例住院费用及其影响因素进行分析,为评价输入性疟疾导致的经济负担、进而指导疟疾防控并合理配置医疗资源提供参考.方法 分别收集2019年1月1日-12月31日在广西壮族自治区上林县人民医院、2015年1月1日-2019年12月31日在云南省腾冲市人民医院就诊的输入性疟疾患者住院费用...