West Nile Virus Update - January 1, 2006 - December 31, 2006

264 dead birds, 380 mosquito pools, 23 humans (4 deaths), and 2 horses.
  Dead
Birds		 Mosquito
Pools		 Humans1 Horses Live
Birds		 Other
Albany 7 0 0 0 0 0
Allegany 0 0 0 0 0 0
Broome 4 3 0 1 0 0
Cattaraugus 0 0 0 0 0 0
Cayuga 0 0 0 0 0 0
Chautauqua 8 1 0 0 0 0
Chemung 0 0 0 0 0 0
Chenango 0 0 0 0 0 0
Clinton 1 0 0 0 0 0
Columbia 1 0 0 0 0 0
Cortland 5 0 0 0 0 0
Delaware 0 0 0 0 0 0
Dutchess 1 0 0 0 0 0
Erie 5 27 0 0 0 0
Essex 0 0 0 0 0 0
Franklin 0 0 0 0 0 0
Fulton 1 0 0 0 0 0
Genesee 0 0 0 0 0 0
Greene 0 0 0 0 0 0
Hamilton 0 0 0 0 0 0
Herkimer 1 0 0 0 0 0
Jefferson 2 0 0 0 0 0
Lewis 5 0 0 0 0 0
Livingston 3 0 0 0 0 0
Madison 0 0 0 0 0 0
Monroe 10 0 0 0 0 0
Montgomery 1 0 0 0 0 0
Nassau 5 44 5 (1) 0 0 0
Niagara 12 8 1 (0) 0 0 0
Oneida 0 0 0 0 0 0
Onondaga 22 0 0 0 0 0
Ontario 6 0 0 0 0 0
Orange 0 1 0 0 0 0
Orleans 5 0 0 0 0 0
Oswego 1 0 0 1 0 0
Otsego 1 0 0 0 0 0
Putnam 2 0 0 0 0 0
Rensselaer 0 0 0 0 0 0
Rockland 0 10 0 0 0 0
Saratoga 1 0 0 0 0 0
Schenectady 0 0 0 0 0 0
Schoharie 0 0 0 0 0 0
Schuyler 1 0 0 0 0 0
Seneca 7 0 0 0 0 0
St. Lawrence 1 0 0 0 0 0
Steuben 0 0 0 0 0 0
Suffolk 64 57 2 (0) 0 0 0
Sullivan 0 1 0 0 0 0
Tioga 0 0 0 0 0 0
Tompkins 9 5 0 0 0 0
Ulster 0 0 0 0 0 0
Warren 0 0 0 0 0 0
Washington 0 0 0 0 0 0
Wayne 2 1 1 (1) 0 0 0
Westchester 0 24 2 (0) 0 0 0
Wyoming 0 0 0 0 0 0
Yates 1 1 0 0 0 0
 
Bronx (NYC) 4 9 1 (0) 0 0 0
Brooklyn (NYC) 6 13 0 0 0 0
Manhattan (NYC) 0 4 1 (0) 0 0 0
Queens (NYC) 12 35 2 (0) 0 0 0
Staten Island (NYC) 47 136 8 (2) 0 0 0
69 197 12 (2) 0 0 0
 
264 380 23 (4) 2 0 0

1 Number in parentheses indicates number of deaths.

  • Not all animals testing positive are necessarily ill or symptomatic of WNV infection. Some specimens are tested only for surveillance purposes.
  • The total number of WNV-positive mammals or birds depends on the amount of surveillance and testing in each county, and is not necessarily associated with degree of WNV risk; however, risk can be elevated in counties with elevated dead crow densities.
  • Dead crow sightings are a possible early warning of, but not definitive confirmation of, WNV activity. Crows die of many causes and reporting levels may vary among counties. In previous years, however, most human cases were preceded by increases in county-wide dead crow density. Recent analyses have determined that in 2002 persons in counties with moderate or high weekly dead crow densities had approximately 3 times the risk of WNV compared to persons in counties with lower dead crow density.