Yellow fever in Brazil: thoughts and hypotheses on the emergence in previously free areas
Yellow fever in Brazil: thoughts and hypotheses on the emergence in previously free areas
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DOI：
10.1590/s0034-89102010005000046
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发表时间：
2010-12-01
期刊：
影响因子：
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通讯作者：
Vasconcelos, Pedro Fernando da Costa
中科院分区：
文献类型：
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作者：
Vasconcelos, Pedro Fernando da Costa
本文描述并讨论了2008年和2009年期间在圣保罗州（巴西东南部）和南里奥格兰德州（南部）黄热病重新出现及其传播动态的相关因素。以下因素对黄热病在这些地区的重新出现起了关键作用：易感人群众多;病媒和主要宿主（非人灵长类动物）的高流行率;有利的气候条件，特别是降雨量增加;新的遗传谱系的出现;以及受病毒感染的人和/或猴子的循环。有必要制定有效的监测计划，以防止黄热病在巴西其他州重新出现。
This article describes and discusses factors associated to the reemergence of yellow fever and its transmission dynamics in the states of Sao Paulo (Southeastern Brazil) and Rio Grande do Sul (Southern) during 2008 and 2009. The following factors have played a pivotal role for the reemergence of yellow fever in these areas: large susceptible human population; high prevalence of vectors and primary hosts (non-human primates); favorable climate conditions, especially increased rainfall; emergence of a new genetic lineage; and circulation of people and/or monkeys infected by virus. There is a need for an effective surveillance program to prevent the reemergence of yellow fever in other Brazilian states.