|
|
||||||
|
|
||||||
| Year | Number of counties | # of birds | # of sera | # + EEE | # + SLE | #+WN |
| 1988 | 16 | 546 | 584 |
7 | 2 | 0 |
| 1989 | 18 | 0 | 768 |
2 | 44 | 0 |
| 1990 | 22 | 784 | 1826 |
4 | 149 | 0 |
| 1991 | 19 | 653 | 1010 |
0 | 6 | 0 |
| 1992 | 17 | 667 | 1267 |
10 | 1 | 0 |
| 1993 | 19 | 752 | 1771 |
2 | 39 | 0 |
| 1994 | 28 | 890 | 1887 |
14 | 21 | 0 |
| 1995 | 28 | 1024 | 2704 |
11 | 23 | 0 |
| 1996 | 28 | 859 | 1394 |
17 | 6 | 0 |
| 1997 | 18 | 688 | 1720 |
5 | 76 | 0 |
| 1998 | 27 | 1087 | 2921 |
25 | 53 | 0 |
| 1999 | 24 | 946 | 2816 |
5 | 44 | 0 |
| 2000 | 26 | 846 | 1684 |
6 | 18 | 0 |
| 2001 | 27 | 1006 | 2548 |
9 | 0 | 23 |
| 2002 | 29 | 1052 | 2852 |
7 | 0 | 39 |
| Average* (1988-2002) | 8.4 | 34.4 | 31.0 | |||
| Median* (1988-2002) | 6.5 | 22.0 | 31.0 | |||
* WNV average/median: 2001-2002