关键词: 间日疟, 流行病学方法, 疫情回升, 媒介监测, 中华按蚊

Abstract: Objective To understand and analyze malaria situation in Yongcheng city of Henan province during 2003-2005 and provide evidence for malaria control and prevention. Methods Data on malaria epidemic situation,vector surveillance,blood examination of fever cases and serological surveillance on students were collected and analyzed. Results 890 malaria cases were reported and average incidence of malaria was 2.17 per ten thousand in Yongcheng city during 2003-2005. The number of reported malaria cases in 2004 and 2005 were 13.00 and 3.23 times of that of the previous year,respectively. The number of malaria cases reported from 10 townships in eastern part of the city accounted for 80.22% of the total cases. Most of malaria cases were students and farmers. Positive rate was 5.82% in blood examination of fever patients and 15.31% in IFA of students,respectively. 154 Anopheles sinensis were captured and no An.anthropophagus was found in vector surveillance in 2005. Conclusion Dramatic re-emergence of malaria was observed in Yongcheng city. Various control measures of malaria should be strengthen and rising trend of malaria epidemic situation should be timely suppressed.