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      Classification of malaria foci and distribution map creation for malaria elimination in Jiangsu

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          Abstract

          Objective To classify the malaria foci in Jiangsu Province and establish the method to make foci distribution map

          Methods The epidemic data of malaria cases in Jiangsu Province from 2011 to 2018 were collected, and the types of malaria foci were comprehensively judged according to the sources of infection, species of infected parasites, season of infection and malaria mosquito vector. The KML file format converter was used to realize the batch marking of malaria foci, and the distribution map of malaria foci was created by loading data into Google Earth.

          Results A total of 2 463 malaria cases were reported in Jiangsu Province from 2011 to 2018 which included 119 cases of P. vivax, 1 928 cases of P. falciparum, 80 cases of P. malariae, 316 cases of P. ovale, and 20 cases of mixed infection ( P. falciparum and P. ovale). Among the 2 463 cases, 13 were locally infected, 9 were imported from other provinces in China, 2 were imported from other cities of Jiangsu Province, 2 435 were imported from other countries and 4 were infected by blood transfusion. Based on the foci classification, 13 cases belong to active foci which were the 13 local cases reported in 2011, 56 cases belong to residual non-active foci which were imported P. vivax malaria cases from May to October, 2 394 cases belong to cleared foci which included 1 928 cases of imported P. falciparum, 316 cases of imported P. ovale, 80 cases of imported P. malariae, 20 cases of imported P. falciparum mixed with P. ovale, and 50 cases of imported P. vivax during non-transmission seasons. The distribution map of malaria foci in Jiangsu Province from 2011 to 2018 was made based on Google Earth.

          Conclusion Mass production of malaria foci distribution map can be made by KML file converter which can provide technical support for provincial malaria elimination verification.

          Abstract

          摘要: 目的 对江苏省疟疾疫点进行分类并建立疫点分布图制作方法。 方法收集 2011— 2018年江苏省疟疾病 例疫情资料,根据病例的感染来源、感染虫种、感染季节以及传疟媒介种类综合判断疫点类型,采用KML文件格式转换 器实现疫点的批量标记,利用Google Earth加载数据完成疫点分布图制作。 结果 2011—2018 年江苏省共报告疟疾病 例 2 463例,其中,间日疟 119 例、恶性疟 1 928 例、三日疟 80 例、卵形疟 316 例、恶性疟与卵形疟混合感染 20 例。 2 463 例 病例中,本地感染病例 13 例、国内其他省输人病例 9 例、省内其他市输人病例 2 例、境外输人性病例 2 435 例、输血感染 病例 4 例。 2 463 例疟疾病例经综合判断疫点分类为:巳出现传播的疫点 13 个,为 2011 年报告的 13 例本地感染病例;具 备传播可能的疫点 56 个,为 5—10 月份输人性间日疟病例;无传播可能的疫点 2 394 个,包括输人性恶性疟 1 928 例、输 人性卵形疟 316 例、输人性三日疟 80 例、输人性恶性疟与卵形疟混合感染 20 例,以及非流行季节输人性间日疟 50 例。 制作了基于Google Earth的江苏省 2011—2018 年疟疾疫点分布图。 结论 依托KML文件转换器实现了疟疾疫点分布 图的批量制作,为省级消除疟疾评估提供了技术支持。

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          Author and article information

          Journal
          CTM
          China Tropical Medicine
          China Tropical Medicine (China )
          1009-9727
          01 January 2020
          01 March 2020
          : 20
          : 1
          : 18-22
          Affiliations
          1Key Laboratory of Parasitic Diseases Control and Prevention, National Health Commission; Key Laboratory of Parasite and Vector Control, Jiangsu Institute of Schistosomiasis Control, Wuxi, Jiangsu 214064, China
          Author notes
          Corresponding author: LIU Yaobao, E-mail: yaobao0721@ 123456163.com
          Article
          j.cnki.46-1064/r.2020.01.04
          10.13604/j.cnki.46-1064/r.2020.01.04
          © 2020 Editorial Department of China Tropical Medicine

          This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 Unported License (CC BY-NC 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See https://creativecommons.org/licenses/by-nc/4.0/.

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