Chen Hualiang, Yao Linong, Zhang Lingling, Zhang Xuan, Lu Qiaoyi, Yu Kegen, Ruan Wei
Am J Trop Med Hyg. 2015 Aug;93(2):305-309. doi: 10.4269/ajtmh.15-0080. Epub 2015 Jun 15.
To summarize the changing epidemiological characteristics of malaria in Zhejiang Province, China, we collected data on malaria from the Chinese Notifiable Disease Reporting System (NDRS) and analyzed them. A total of 2,738 malaria cases were identified in Zhejiang Province from 2005 to 2014, of which 2,018 were male and 720 were female. Notably, only 7% of malaria cases were indigenous and the other cases were all imported. The number of malaria cases increased from 2005 to 2007, peaked in 2007, and then decreased from 2007 to 2011. There were no indigenous cases from 2012 to 2014. Of all cases, 68% of cases contracted Plasmodium vivax, 27% of cases contracted P. falciparum, and two cases contracted P. malariae. About 88% of malaria cases during 2005-2011 occurred yearly between May and October, but the number of malaria cases in different months during 2012-2014 was similar. The median age was 33 years, and 1,892 cases occurred in persons aged 20-50 years. The proportion of businessmen increased and the proportion of migrant laborers decreased in recent years. The median time from illness onset to confirmation of malaria cases was 5 days and it decreased from 2005 to 2014. Some epidemiological characteristics of malaria have changed, and businessmen are the emphases to surveillance in every month.
为总结中国浙江省疟疾流行病学特征的变化，我们从中国法定传染病报告系统（NDRS）收集了疟疾数据并进行分析。2005年至2014年浙江省共报告疟疾病例2738例，其中男性2018例，女性720例。值得注意的是，仅7%的疟疾病例为本地感染，其余均为输入性病例。疟疾病例数在2005年至2007年呈上升趋势，2007年达到峰值，随后在2007年至2011年呈下降趋势。2012年至2014年无本地感染病例。所有病例中，68%感染间日疟原虫，27%感染恶性疟原虫，2例感染三日疟原虫。2005年至2011年约88%的疟疾病例发生在每年5月至10月，但2012年至2014年不同月份的疟疾病例数相近。中位年龄为33岁，1892例病例发生在20至50岁人群中。近年来商人所占比例上升，农民工所占比例下降。疟疾病例从发病到确诊的中位时间为5天，且从2005年至2014年呈下降趋势。疟疾的一些流行病学特征发生了变化，商人是每月监测的重点对象。
