| mosquito surveillance for west nile virus in southeastern wisconsin--2002. | in 2001, west nile virus (wnv) was identified among dead american crows and bluejays in five counties in southeastern wisconsin. in response to the introduction of wnv, a pilot mosquito surveillance program was initiated in these five southeastern wisconsin counties during the summer of 2002. forty sites were selected for surveillance one night each week during a 17-week period. mosquitoes were collected in carbon dioxide-baited light traps and gravid traps. during the study period 31,419 mosqui ... | 2003 | 15931283 |