Sturrock R F
Bull World Health Organ. 1966;34(2):277-83.
The complete eradication of snails from waterbodies is rarely achieved with existing molluscicides. This communication describes laboratory experiments designed to show whether snails surviving such treatment are still capable of transmitting Schistosoma mansoni. The treatment, with Bayluscide, was given at various times during the development of the infection. Snails that survived treatment were as susceptible to infection as were untreated controls but, although the initial survival rate of infected snails was as good as that of uninfected snails, their ultimate survival rate was poorer. Treatment had no permanent effect on the development of the schistosome, although there is some evidence of a delay in some cases. Infected snails may survive a field application of Bayluscide and continue parasite transmission, and uninfected survivors are susceptible to infection. Thus, while it may curtail transmission dramatically, the use of molluscicides will not eliminate transmission in the absence of other measures to prevent infection of the surviving snails.
使用现有的杀螺剂很难完全清除水体中的蜗牛。本通讯描述了旨在表明经此类处理后存活的蜗牛是否仍能传播曼氏血吸虫的实验室实验。在感染发展的不同阶段使用贝螺杀进行处理。存活下来的蜗牛与未处理的对照蜗牛一样容易感染，但尽管受感染蜗牛的初始存活率与未受感染蜗牛相同，但其最终存活率较低。处理对血吸虫的发育没有永久性影响，尽管在某些情况下有证据表明会出现延迟。受感染的蜗牛可能在田间施用贝螺杀后存活并继续传播寄生虫，而未受感染的存活蜗牛也易受感染。因此，虽然使用杀螺剂可能会大幅减少传播，但在没有其他措施防止存活蜗牛感染的情况下，它并不能消除传播。
