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目的分析和评价粤桂琼三省区疟疾联防机制对控制广东流动人口疟疾疫情的作用。方法主动侦查与被动侦查相结合,通过发热病人血检和疟疾病人个案调查,使用回归流行病学方法对资料进行分类和分析。结果广东参加疟疾联防的6个地级市16年共发现流动人口疟疾病例32233例,其中归属广东籍流动人口疟疾病人有2401例;归属海南省籍流动人口疟疾病人有11224例;归属广西籍流动人口疟疾病人有4253例;归属其它省籍流动人口疟疾病人有14355例。32233例流动人口疟疾病人中,输入性恶性疟有47例,其余32186例为间日疟。流动人口中的回归人员共有病例7183例,血检阳性率为2.75%;流动人口中的外来人员共有病例25050例,血检阳性率为2.19%;两者血检阳性率差异无统计学意义。各种职业的流动人口血检阳性率野外作业与室内作业人员相比,差异有统计学意义。1992-2007年广东省疟疾疫情呈逐年下降趋势。结论通过连续16年的疟疾联防,广东流动人口疟疾疫情得到控制,输入病例和输入继发病例明显减少,广东省疟疾疫情稳定,年发病率逐年下降。
Objective To analyze and evaluate the effect of malaria prevention in Guangdong, Guangxi and Hainan provinces on controlling the outbreak of malaria in mobile population in Guangdong. Methods Combining active investigation with passive investigation, the data were classified and analyzed by regression epidemiological method through the case investigation of hematogenous patients and malaria patients. Results There were 32,233 cases of malaria in floating population in six prefecture-level cities participating in the malaria paramedics in Guangdong in Guangdong in 16 years, of which 2401 were malaria patients belonging to the floating population of Guangdong; 11,224 cases of malaria belonging to Hainan-born floating population were attributable to Guangxi; There are 4253 cases of malaria in the population and 14355 cases of malaria belonging to other migrant workers of provincial origin. Of 32,233 cases of floating population with malaria, 47 were imported as falciparum malaria and the other 32,186 were Vivax malaria. Among the floating population, 7183 cases were returned, the positive rate of blood test was 2.75%. The total number of floating population was 25050, the positive rate of blood test was 2.19%. There was no significant difference in the positive rate of blood test between the two groups. The positive rate of blood tests in floating population of various occupations was significantly different from that of indoor workers in field work. The epidemic situation of malaria in Guangdong Province showed a declining trend from 1992 to 2007. Conclusion Through 16 consecutive years of malaria prevention and control, the outbreak of malaria in floating population in Guangdong has been controlled. The number of imported malaria cases and the number of imported malaria cases decreased significantly. The epidemic situation of malaria in Guangdong Province was stable and the annual incidence rate dropped year by year.