关键词: 河南省, 疟疾, 实验室检测, 流行病学

Abstract: Objective To analyze the laboratory detection methods and epidemiological characteristics of 37 web-reported malaria cases, thus provide scientific basis for the imported malaria diagnosis. Methods Thirty-seven samples collected during October to December in 2016 were detected using microscopy, rapid diagnostic reagents and nested-PCR, and then SPSS 18.0 software was used for data statistical analysis, and Chi square test was used for comparison of the rates. Results Thirty-seven cases of malaria infections were mostly young men and all of them came back from Africa. Combining epidemiological history and clinical manifestations of the cases, we finally confirmed 35 positive cases using three laboratory tests. The cases of Plasmodium falciparum, P. vivax, P. ovale, P. malariae and mixed infection were 25, 2, 6, 1, 1 respectively, and another 2 reported-cases were negative. The positive rate was 94.59%. Conclusion Malaria screening is required for the persons returning from malaria endemic areas such as Africa. All three detection methods have their own advantages and disadvantages in detection of malaria, thus they should be better used in combination to improve the efficiency of malaria diagnosis.

Key words: Henan province, Malaria, Laboratory test, Epidemiology