Webbe G
Bull World Health Organ. 1965;33(2):147-53.
Accurate quantitative assessment is essential to any study of disease transmission; in relation to the transmission of bilharziasis the most important characteristics that have to be determined include density, reproduction and mortality rates, the age and sex structure of the population, dispersion and the intrinsic rate of natural increase (the biotic potential). The author discusses techniques that have been developed to yield this and other information and stresses the need to evaluate such techniques objectively.Some basic principles of population ecology are defined and discussed in relation to the control of transmission. It is considered that laboratory studies can be usefully carried on in conjunction with field work but that they cannot be substituted for field investigations in determining the parameters of bilharziasis transmission for a given area.
准确的定量评估对于任何疾病传播研究都至关重要;就血吸虫病的传播而言,必须确定的最重要特征包括密度、繁殖率和死亡率、人群的年龄和性别结构、分布以及自然增长的内在速率(生物潜能)。作者讨论了为获取这些信息及其他信息而开发的技术,并强调了客观评估此类技术的必要性。文中定义并讨论了一些与传播控制相关的种群生态学基本原理。人们认为,实验室研究可以与实地工作结合进行,但在确定特定地区血吸虫病传播参数时,实验室研究不能替代实地调查。