蛔虫重度流行区人群化疗策略的研究

目的：评价不同化疗措施控制蛔虫的效果。方法在4个控制村用阿苯哒唑分别进行1年1次全民化疗、2年1次全民化疗、1年1次选择性化疗和1年2次选择性化疗措施后，连续4年观察其对控制居民蛔虫的效果，并和对照村进行比较。结果2001年5个试点村蛔虫平均阳性率为44.37%（4850/10931），采取每1次/年全民化疗人群蛔虫感染率下降最大，由2001年的45.2%下降到2004年的6.3%，降幅为86.1%。结论1次/年全民化疗策略对于控制蛔虫感染的效果佳。

Research on chemotherapy strategy for population in heavy epidemic areas with ascaris iumbricoides

Objective To evaluate the effect of different chemotherapy strategies for Ascaris lumbricoides. Methods Four chemotherapy strategies with Albendazole,which were mass chemotherapy once a year,mass chemotherapy once in two years,se-lective chemotherapy once a year and selective chemotherapy twice a year,were carried out in four control villages,respectively. The effects of strategies on infection control of Ascaris lumbricoides were observed continuously for 4 years ,and compared with the dada of a control village. Results The average positive rate of Ascaris lumbricoides was 44.37%（4850/10931） in 5 pilot villages in 2001. The infection rate of Ascaris lumbricoides was decreased maximally,from 45.2%in 2001 to 6.3%in 2005 with the reduction of 86.1% in villages where the strategy of mass chemotherapy once a year was implemented. Conclusion The strategy of mass chemotherapy once a year has the best effect on infection control of Ascaris lumbricoides.