2001-2008年海南省恶性疟发病率与大劣按蚊捕获数关系

Relationship between falciparum malaria incidence and the number of Anopheles dirus in Hainan from 2001 to 2008

目的分析海南省恶性疟发病率与大劣按蚊捕获数的相关性,为有针对性地开展海南省恶性疟防控工作提供依据。方法计算2001-2008年五指山市和琼中县恶性疟发病率和捕获的大劣按蚊数,采用Cochran-Armitage趋势检验分析两个地区恶性疟发病率的变化趋势;采用Spearman秩相关分析,探讨两个地区恶性疟发病率与大劣按蚊数量的相关性。结果 2001-2008年两个地区恶性疟发病率存在波动,但总体呈显著下降的趋势(Z五指山=-6.16,P<0.01;Z琼中=-7.17,P<0.01);两个地区大劣按蚊捕获量均存在较大波动,并且恶性疟发病率与大劣按蚊捕获量均无显著相关性(r五指山=0.36,P>0.05;r琼中=0.67,P>0.05)。结论恶性疟的防控不仅要加强灭蚊工作,更要从环境治理、易感人群保护等多个角度入手,开展全方位的防控工作。

Objective To analyze the relationship between falciparum malaria incidence and the number of Anopheles dirus in Hainan Province from 2001 to 2008,so as to provide the evidence for malaria control and prevention in Hainan Province.Methods The falciparum malaria incidence and the numbers of Anopheles dirus in 2001-2008 were calculated according to the data from Wuzhishan City and Qiongzhong County in Hainan Province.The Cochran-Armitage trend test was employed to explore the trend of falciparum malaria incidence.And Spearman rank correlation analysis was applied to analyze the relationship between the falciparum malaria incidence and the numbers of Anopheles dirus in Hainan from 2001 to 2008.Results A fluctuating but distinctly declining temporal trend of falciparum malaria incidence was identified in these two areas（ZWuzhishan=-6.16,P〈0.01;ZQiongzhong=-7.17,P〈0.01）.The falciparum malaria incidences were not correlated with the numbers of Anopheles dirus in these two areas（rWuzhishan=0.36,P〉0.05;rQiongzhong=0.67,P〉 0.05）.Conclusion The control and prevention of falciparum malaria should be implemented from many aspects,as well as Anopheles dirus control,environment management,susceptible people protection and so on.