Last data update: May 06, 2024. (Total: 46732 publications since 2009)
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Query Trace: Charnetzky D[original query] |
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Ecology of potential West Nile virus vectors in southeastern Louisiana: enzootic transmission in the relative absence of Culex quinquefasciatus
Godsey MS Jr , King RJ , Burkhalter K , Delorey M , Colton L , Charnetzky D , Sutherland G , Ezenwa VO , Wilson LA , Coffey M , Milheim LE , Taylor VG , Palmisano C , Wesson DM , Guptill SC . Am J Trop Med Hyg 2013 88 (5) 986-96 A study of West Nile virus (WNV) ecology was conducted in St. Tammany Parish, Louisiana, from 2002 to 2004. Mosquitoes were collected weekly throughout the year using Centers for Disease Control and Prevention (CDC) light traps placed at 1.5 and 6 m above the ground and gravid traps. A total of 379,466 mosquitoes was collected. WNV was identified in 33 pools of mosquitoes comprising five species; 23 positive pools were from Culex nigripalpus collected during 2003. Significantly more positive pools were obtained from Cx. nigripalpus collected in traps placed at 6 m than 1.5 m that year, but abundance did not differ by trap height. In contrast, Cx. nigripalpus abundance was significantly greater in traps placed at 6 m in 2002 and 2004. Annual temporal variation in Cx. nigripalpus peak seasonal abundance has significant implications for WNV transmission in Louisiana. Two WNV-positive pools, one each from Anopheles crucians s.l. and Cx. erraticus, were collected during the winter of 2004, showing year-round transmission. The potential roles of additional mosquito species in WNV transmission in southeastern Louisiana are discussed. |
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