关键词: 机场口岸, 中华按蚊, 疟疾

Abstract:

Objective To investigate and analyze distribution of Anopheles sinensis density from 2012 to 2014 in peripheral areas of Beijing Capital International Airport (BCIA), and evaluate the existence of the transmitting mosquitoes of malaria in an effort to provide theoretic basis for the construction of Risk Assessment and Early Warning System. Methods According to GB/T 23797-2009, capture method of light-traps was adopted in mosquito surveillance. Epidemiological analysis was carried out on mosquito density monitoring from 2012 to 2014. Analysis of variance was adopted in statistical analysis. For the capture of An. sinensis for four kinds of Anopheles to Plasmodium nucleic acid detection. Results Mosquito density index was 34.66 mosquitoes per light-trap in 1 hour. In total 103 231 adult mosquitoes were captured within 3 years, Culex pipiens pallens was the predominant species, accounting for 85.05%, and the An. sinensis (0.09%). The annual average densities of An. sinensis were 0.04, 0.03 and 0.03 mosquitoes per light-trap in 1 hour, respectively. Mosquito densities were not significantly different among 2012, 2013 and 2014 (F=0.310, P > 0.05). The adult An. sinensis were captured from May to September. The densities of An. sinensis in seven surveillance sites monitoring points were 0-0.17, there were significant differences among seven monitoring sites(F=10.548, P < 0.01). The test results of mosquito-borne malaria parasite carrying status were negative. Conclusion The transmitting mosquitoes of malaria exist at BCIA, Beijing has faced potential risks of malaria prevalence by imported cases (Overseas and other provinces infections). It is necessary to continuously strengthen monitor for An. sinensis at BCIA.

Key words: Airport, Anopheles sinensis, Malaria