de Meillon B, Grab B, Sebastian A
Bull World Health Organ. 1967;36(1):91-100.
In the past, several indices have been proposed to evaluate the threat of vectors to the community. Such indices, if accurately determined, could serve to assess the effectiveness of vector control campaigns. In this paper, a "risk of infection" index is introduced for the case of urban filariasis transmitted by Culex pipiens fatigans in Rangoon, Burma. This index is directly proportional to the three principal parameters that determine the extent of transmission-namely, the biting density of the vector, the proportion parous to total biting, and the proportion infective to total parous; all these parameters are easily determined from biting catches. Examples of the use of the index are given and it is noted that, in areas where conditions are not favourable to the vector throughout the year, or where the speed of development of the parasite in the vector may not be constant, these variables must be taken into account in calculating the index.
过去，人们提出了多种指标来评估病媒对社区的威胁。如果能准确确定这些指标，就可以用来评估病媒控制活动的成效。本文针对缅甸仰光由致倦库蚊传播的城市丝虫病情况，引入了一个“感染风险”指标。该指标与决定传播程度的三个主要参数成正比，这三个参数分别是病媒的叮咬密度、已产卵叮咬数占总叮咬数的比例以及感染性已产卵数占总已产卵数的比例；所有这些参数都可以通过叮咬捕获很容易地确定。文中给出了该指标的使用示例，并指出，在全年条件都不利于病媒生存的地区，或者在寄生虫在病媒体内的发育速度可能不稳定的地区，计算该指标时必须考虑这些变量。
