Surveillance results from the first West Nile virus transmission season in Florida, 2001
Surveillance results from the first West Nile virus transmission season in Florida, 2001
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DOI：
10.4269/ajtmh.2003.69.141
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发表时间：
2003-08-01
影响因子：
3.3
通讯作者：
Wiersma, ST
中科院分区：
文献类型：
--
作者：
Blackmore, CGM;Stark, LM;Wiersma, ST
2001 年 7 月在佛罗里达州首次发现西尼罗河病毒 (WNV) 后，接下来五个月的密集监测工作发现该州 67 个县中的 65 个县存在病毒活动，有 1,106 只野鸟、492 匹马、194 只哨兵鸡和 12 人感染了该病毒。 28 种蚊子分离物中，有 13 种来自库蚊。正如在美国东北部所见，野生鸟类死亡率是最敏感的监测方法。然而，与 1999 年和 2000 年主要发生在城市的动物流行不同，佛罗里达州的传播焦点位于农村，大部分活动发生在该州北部。所有人类病例之前均在动物中检测到西尼罗河病毒；然而，这十二起案件中只有八起是在居住县发生西尼罗河活动的报告之前发生的。多个监测系统检测到的西尼罗河病毒阳性动物比其中七例病例早两周或更长时间。
After West Nile virus (WNV) was first detected in Florida in July 2001, intensive surveillance efforts over the following five months uncovered virus activity in 65 of the state's 67 counties with 1,106 wild birds, 492 horses, 194 sentinel chickens, and 12 people found infected with the virus. Thirteen of 28 mosquito isolations came from Culex mosquitoes. As seen in the northeastern United States, wild bird mortality was the most sensitive surveillance method. However, unlike the predominantly urban 1999 and 2000 epizootics, the Florida transmission foci were rural with most activity detected in the northern part of the state. All human cases were preceded by the detection of WNV in animals; however, only eight of the twelve cases were preceded by reports of WNV activity in the county of residence. West Nile virus-positive animals detected by multiple surveillance systems preceded seven of these cases by two weeks or more.