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目的分析楚雄市疟疾流行趋势,为实施消除疟疾提供依据。方法连续对楚雄市本地居民、外出务工返乡人员进行病原监测,计算疟疾血片阳性率和疟疾发病率。结果 2010—2012年对发热病人血检共6 783例,血片阳性4例,阳性率0.59‰,本地居民检出率0(0/4 035人),外出务工返乡人员检出率1.46‰(4/2 748),4例阳性者3例为间日疟,1例为间日疟和恶性疟混合感染。2010年务工返乡者阳检率3.67‰(2/545),2011年1.54‰(2/1 301),2012年未检出阳性病例。2010和2011年疟疾年均发病率均为0.039/万,2012年为0。结论楚雄市连续3年无本地感染病例,4例均为到国外虐区务工的输入型病例,无输入继发病例,说明采取的疟疾防控措施有效,2014年基本消除疟疾目标有望实现。
Objective To analyze the epidemic trend of malaria in Chuxiong City and provide the basis for the elimination of malaria. Methods The pathogen surveillance of local residents and returning migrant workers in Chuxiong City was continuously conducted to calculate the positive rate of malaria blood film and the incidence of malaria. Results A total of 6 783 blood samples were collected from 4 patients with fever in 2010-2012. The positive rate was 0.59 ‰. The detection rate of local residents was 0 (0/4 035). The detection rate of returned migrant workers was 1.46 ‰ (4/2 748), 3 of the 4 positive cases were Plasmodium vivax, and 1 was a mixed infection of Plasmodium vivax and P. falciparum. In 2010, the rate of positive return of migrant workers was 3.67 ‰ (2/545) in 2011 and 1.54 ‰ (2/1 301) in 2011. No positive cases were detected in 2012. The annual average incidence of malaria in 2010 and 2011 was 0.039 / million and in 2012 it was 0. Conclusion Chuxiong had no local infection cases for three years in a row, and all four cases were imported cases of migrant workers from overseas. There was no input of secondary cases, indicating that the malaria control measures taken were effective and the basic goal of eliminating malaria in 2014 was expected to be achieved.