Historical HAI results:
October 2002
Year	Number of counties	# of birds	# of sera	# + EEE	# + SLE	#+WN
1988	23	na	669	4	6	0
1989	18	na	768	2	81	0
1990	22	1062	2460	2	407	0
1991	21	794	1848	15	23	0
1992	21	881	2426	8	2	0
1993	21	844	1799	1	100	0
1994	21	904	2056	6	31	0
1995	28	1017	2692	5	25	0
1996	28	1048	3397	10	7	0
1997	22	1002	2822	2	269	0
1998	27	1112	2744	4	84	0
1999	27	1062	2882	6	100	0
2000	27	1104	2931	2	80	0
2001	31	1142	3754	7	0	76
2002	31	1366	3797	12	0	306
Average* (1988-2002)				5.7	81.0	191
Median* (1988-2002)				5.0	31.0	191

* EEE & SLE average/median: 1988-2002

* WNV average/median: 2001-2002

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