2002年，路易斯安那州，感染西尼罗河病毒的蚊子。
West Nile virus-infected mosquitoes, Louisiana, 2002.
作者信息
Godsey Marvin S, Nasci Roger, Savage Harry M, Aspen Stephen, King Raymond, Powers Ann M, Burkhalter Kristen, Colton Leah, Charnetzky Dawn, Lasater Sarah, Taylor Viki, Palmisano Charles T
机构信息
Division of Vector-Borne Infectious Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado 80522, USA.
出版信息
Emerg Infect Dis. 2005 Sep;11(9):1399-404. doi: 10.3201/eid1109.040443.
Human cases of West Nile virus (WNV) disease appeared in St. Tammany and Tangipahoa Parishes in southeastern Louisiana in June 2002. Cases peaked during July, then rapidly declined. We conducted mosquito collections from August 3 to August 15 at residences of patients with confirmed and suspected WNV disease to estimate species composition, relative abundance, and WNV infection rates. A total of 31,215 mosquitoes representing 25 species were collected by using primarily gravid traps and CO2-baited light traps. Mosquitoes containing WNV RNA were obtained from 5 of 11 confirmed case sites and from 1 of 3 sites with non-WNV disease. WNV RNA was detected in 9 mosquito pools, including 7 Culex quinquefasciatus, 1 Cx. salinarius, and 1 Coquillettidia perturbans. Mosquito infection rates among sites ranged from 0.8/1,000 to 10.9/1,000. Results suggest that Cx. quinquefasciatus was the primary epizootic/epidemic vector, with other species possibly playing a secondary role.
2002年6月，西尼罗河病毒（WNV）病的人类病例出现在路易斯安那州东南部的圣塔曼尼和坦吉帕霍阿教区。病例在7月达到峰值，随后迅速下降。我们于8月3日至8月15日在确诊和疑似WNV病患者的住所收集蚊子，以估计物种组成、相对丰度和WNV感染率。主要使用孕蚊诱捕器和二氧化碳诱蚊灯诱捕器共收集到代表25个物种的31215只蚊子。从11个确诊病例地点中的5个地点以及3个非WNV病地点中的1个地点获得了含有WNV RNA的蚊子。在9个蚊群中检测到WNV RNA，包括7只致倦库蚊、1只盐泽库蚊和1只骚扰柯蚊。各地点的蚊子感染率在0.8/1000至10.9/1000之间。结果表明，致倦库蚊是主要的动物/人类流行病传播媒介，其他物种可能起次要作用。
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