2003年湖南省血吸虫病疫情纵向观察点监测报告

The 2003 Annual Schistosomiasis Surveillance Report on Hunan Province Longitudinal Pilots Endemic Areas

目的 掌握“十五”期间湖南省血吸虫病疫情流行现状及变化趋势，为制定防治对策提供科学依据。方法 监测20个疫情纵向观察点的螺情、居民和耕牛病情。结果 20个观察点粪检6287人，感染率为6．92％；粪检877头家畜，感染率为9．01％。各试点垸内活螺密度为0．0004～2．0284只／0．11m^2，未查到感染性钉螺。垸外活螺平均密度为1．3366只／0.11m^2。，感染螺平均密度为0.0034只／0．11m^2。结论 湖南省血吸虫病流行区居民和耕牛感染率仍较高，特别是高度和中度流行区更为明显。提示全省今后防治策略的重点应针对中、高度流行区的居民和耕牛。

Objective To monitor the epidemic status and trends of schistosomiasis in Hunan pilots in the period of 10th five- year plan and provide the reference data for policy - making. Methods The status of snail density and distribution and registered schistosomiasis prevalence of both human residents and buffaloes in the pilots were investigated. Results Stool specimens of 6.287 native residents were examined, with an infection rate of 6.92%; and stool specimens of 877 domestic animals were examined, with an infection rate of 9.01%. Inside the embankment, the density of living snails in all pilots ranged from 0. 0004 to 2. 0284/0.11m^2 , but no infected snails were identified. The average density of living snails was 1. 3366/0. 11 m^2 outside the embankment, and the average density of infected snails was 0. 0034/0.11 m^2 inside. Conclusions The infection rate of schistosomiasis in native residents and buffaloes ranked a relative high level, especially in the high and medium degree of transmission areas. It implied that the future control targets should be focused on the residents and buffaloes in the high and medium degree of transmission areas.