Mosquito surveillance for West Nile virus in Connecticut, 2000: isolation from Culex pipiens, Cx. restuans, Cx. salinarius, and Culiseta melanura.

摘要: Fourteen isolations of West Nile (WN) virus were obtained from four mosquito species (Culex pipiens [5], Cx. restuans [4], salinarius [2], and Culiseta melanura [3]) in statewide surveillance conducted June through October 2000. Most isolates mosquitoes collected densely populated residential locales Fairfield New Haven counties, where the highest rates dead crow sightings reported WN was detected 1999. Minimum field infection per 1,000 ranged 0.5 to 1.8 (county based) 1.3 76.9 (site specific). appears be important initiating transmission among birds early summer; play a greater role amplifying later season. Cs. could circulation sylvan environments; is suspected vector humans horses.