Table 1. Trapping effort at West Nile virus (WNV) case-patient and non–case-patient residences, August 3–15, 2002.

Parish	Site*	Case onset date	Collection dates	No. trap nights†
				Light	Gravid	Other methods‡
St. Tammany	A	Jul 11	Aug 3–6	55	59
	B	Jul 13	Aug 3–6	59	51
	C	Jul 24	Aug 12–15	12	12	A
	D	Jul 29	Aug 12–15	8	8	A
	E	Aug 2	Aug 12–15	11	16	4 F, 4 D, A
	F	Aug 4	Aug 12–15	19	21
	I	Jul 28	Aug 12–15	12	12	A
	J	Aug 4	Aug 12–15	3	3
	K	Jul 29	Aug 13–15	6	6
	g	Not given	Aug 13–15	9	15	3 F
	l	Not given	Aug 14–15	2	2
	m	Not given	Aug 14–15	4	4
Tangipahoa	A	Jul 11	Aug 7–10	54	59
	B	Jun 21	Aug 7–10	60	48

*Capital letters denote confirmed WNV neuroinvasive disease and WNV fever case sites; italicized lower case letters denote non-WNV case sites.
†Only night collections used for trap night calculations.
‡A, aspiration outside buildings; F, Fay-Prince trap; D, duplex cone. Numbers denote trap nights; aspiration times not recorded.