O'Meara Wendy Prudhomme, Collins William E, McKenzie F Ellis
Fogarty International Center, National Institutes of Health, 16 Center Drive, Bethesda, MD 20892, USA.
Am J Trop Med Hyg. 2007 Aug;77(2):246-9.
The intensity of malaria transmission is often measured by looking at the fraction of individuals infected at a given point in time. However, malaria infections in individuals are dynamic, leading to uncertainty about whether a cross-sectional survey that represents a single snapshot in time is a useful representation of a temporally complex process. In this analysis, we examine the impact of parasite density fluctuations on the measurement of parasite prevalence. Our results show that parasite prevalence may be underestimated by 20% or more, depending on the sensitivity of parasite detection.
疟疾传播强度通常通过观察特定时间点感染个体的比例来衡量。然而,个体中的疟疾感染情况是动态变化的,这导致了关于仅代表某个时间点单一快照的横断面调查能否有效反映这个随时间变化的复杂过程存在不确定性。在本分析中,我们研究了寄生虫密度波动对寄生虫流行率测量的影响。我们的结果表明,根据寄生虫检测的灵敏度,寄生虫流行率可能被低估20%或更多。