Objective: To analyze the epidemiological characteristics of malaria in Henan Province, and provide the basis for adjusting and formulating measures of malaria elimination timely.
Methods: The data of malaria cases during 2005 and 2013 in Henan Province was collected and analyzed using Microsoft Office Excel 2003 and SPSS14.0.
Results: Henan Province reported 17,803 malaria cases in 2005-2013, annual incidence was 0.2/100,000 to 5.2/100,000 with an average of 2.0/100,000. The cases were mainly distributed in Shangqiu (9079), Nanyang (4923), Xinyang (1449), Zhumadian (653), and Zhoukou (564), with more young male adults. The highest-risk population was farmers. More cases concentrated in August and September before 2010, but no obvious seasonal peak were seen after 2011. Vivax malaria occupied 95.4% (16,331/17,126) before 2010, but falciparum malaria was the major one after 2011. The laboratory confirmed cases during 2005-2013 took 54.6%. The median interval from symptom appearance to diagnosis was 4 d, and there was a significant difference among the years (χ2=437.2, P<0.01). The number of imported cases increased year by year, 26 cases in 2008 increased 146 cases in 2011. The reported malaria cases were imported cases during 2012 to 2013, of which 79.6% returned from the Africa, and 10.0% were from the Southeast Asia.
Conclusion: Malaria is still an important part of public health in Henan Province, and appropriate control measures and effective tools should be strengthened for eliminating the disease.
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