The distribution of tobacco-barming terrestrial mollusca was investigated within 27 counties of Yunnan Province Totally, 21 species belonging to 15 genera, 8 families, 2 orders, 2 subclasses, and 1 class have been found Notes are given to the morphological, geographical and harmful characteristics of each species, and the chassified index are enacted The comprehensive control measures are put forward
A comprehensive control measure mainly based on harnessing environment of snail-ridden areas to control schistosomiasis was carried out from 1991 to 1994 in Chenqiao village,Hexian county,Anhui.
Conclusion The situation of human intestinal nematode infection is still serious and integrated control measures inclding mass administration of helminthic,health education,improvement of econoic status be taken in Junan county.
Some integrated control measures such as wiping out overwintering pupae,afforesting mixed stands and protecting natural enemies should be taken to reduce the larvae population.