目的 分析2019年河南省疟疾流行特征,为制定全省消除疟疾后监测策略提供依据。 方法 收集2019年河南省疟疾疫情资料及疟疾病例个案调查资料,采用描述流行病学方法对疟疾流行特征进行分析。 结果 2019年河南省共报告疟疾病例228例,其中恶性疟176例（占77.2%）、间日疟12例、三日疟7例、卵形疟33例;男性222例（占97.4%）,女性6例;以30~59岁为主（82.9%,189/228）;报告疟疾病例以境外务工人员为主（78.9%,180/228）。所有病例均为境外输入性病例,其中96.1%（219/228）的病例感染来源地为非洲。报告病例数居前5位的市依次为郑州市（77例）、洛阳市（22例）、濮阳市（20例）、安阳市（19例）和许昌市（15例）,合计报告的病例占全省总病例数的67.1%（153/228）。每月均有病例报告,其中1月和12月报告病例数相对较多。发病至就诊平均间隔时间为1.6 d,其中发病后3 d内就诊202例（占88.6%）;平均确诊时间为1.7 d,其中3 d内确诊为疟疾188例（占82.5%）。24 h内报告率为100%,3 d内流行病学个案调查完成率为98.7%（225/228）,7 d内疫点调查处置率为93.4%（213/228）。 结论 2019年河南省报告的疟疾均为境外输入病例,建议当地卫生部门加强境外输入性病例监测,谨防输入继发病例的发生。

Objective To analyze the epidemiological characteristics of malaria in Henan Province in 2019, in order to provide a basis for formulating effective strategies and measures for surveillance after malaria elimination in Henan Province. Methods Data of malaria cases in Henan Province in 2019 were collected. The epidemiological information of malaria was analyzed with the descriptive epidemiological method. Results A total of 228 cases of malaria were reported in 2019, including 176 cases (77.2%) of falciparum malaria, 12 cases of vivax malaria, 33 cases of oval malaria and 7 cases of quartan malaria; having 222 male(97.4%) and 6 female cases. The majority of the cases was aged between 30 to 59 years (82.9%, 189/228) and were migrant workers (78.9%, 180/228). All of the malaria cases were imported cases and 96.1% (219/228) of them were from Africa. The top five cities having highest reports of cases were Zhengzhou (77 cases), Luoyang (22), Puyang (20), Anyang (19) and Xuchang cities (15), which accounted for 67.1% of total cases in Henan Province. The cases were reported throughout the year, particularly higher in January and December. The average time from onset to first visit to a doctor was 1.6 d and 202 (88.6%) cases went to visit a doctor within 3 days after onset. The average time from the first visit to confirmed diagnosis was 1.7 d, and 188 (82.5%) cases were diagnosed as malaria within 3 days. All of the cases (100%) were reported within 24 h, of them, 225 cases (98.7%) were underwent epidemiological investigation within 3 days, while 213 (93.4%) epidemic sites were surveyed within 7 days. Conclusion All the cases reported from Henan Province in 2019 were imported from abroad. It is suggested that the local health sections should strengthen the surveillance of imported cases from abroad to prevent the occurrence of secondary cases.