Historical HAI results:

July 2001
 Year

Number of counties
 Number of birds

 Number of sera
 # + EEE # + SLE
 1988 23 648 1277 8 0
 1989 16 0 699 3 0
 1990 14 511 754 0 44
1991 21 828 2143 38 3
1992 21 1011 2457 29 1
1993 21 940 2419 15 0
1994 21 924 1936 28 0
1995 23 983 1964 30 0
1996 28 1107 3226 28 0
1997 20 826 2259 29 32
1998 22 919 2048 1 1
1999 23 917 2042 7 1
2000 22 913 2106 0 1
2001 

31

1228

3232

9

2
 Average (1988-2001)     16.1 6.1
 Median (1988-2001)       15.0 1.0

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