West Nile Virus Update - January 1, 2007 - December 31, 2007

83 dead birds, 264 mosquito pools, 22 humans (2 deaths), and 0 horses.
  Dead Birds Mosquito Pools Humans1 Horses Live Birds Other
Albany 0 0 0 0 0 0
Allegany 0 0 0 0 0 0
Broome 0 0 0 0 0 0
Cattaraugus 0 0 0 0 0 0
Cayuga 0 0 0 0 0 0
Chautauqua 0 0 0 0 0 0
Chemung 0 0 0 0 0 0
Chenango 0 0 0 0 0 0
Clinton 0 0 0 0 0 0
Columbia 0 0 0 0 0 0
Cortland 0 0 0 0 0 0
Delaware 0 0 0 0 0 0
Dutchess 2 3 0 0 0 0
Erie 8 21 0 0 0 0
Essex 0 0 0 0 0 0
Franklin 0 0 0 0 0 0
Fulton 0 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 0 0 0 0 0 0
Jefferson 1 0 0 0 0 0
Lewis 0 0 0 0 0 0
Livingston 0 0 0 0 0 0
Madison 0 0 0 0 0 0
Monroe 1 0 0 0 0 0
Montgomery 0 0 0 0 0 0
Nassau 4 30 2 (0)2 0 0 0
Niagara 4 0 0 0 0 0
Oneida 0 0 0 0 0 0
Onondaga 3 3 0 0 0 0
Ontario 0 0 0 0 0 0
Orange 0 0 0 0 0 0
Orleans 1 0 0 0 0 0
Oswego 0 0 0 0 0 0
Otsego 0 0 0 0 0 0
Putnam 1 0 0 0 0 0
Rensselaer 0 0 0 0 0 0
Rockland 0 21 1 (0)3 0 0 0
Saratoga 0 0 0 0 0 0
Schenectady 3 0 0 0 0 0
Schoharie 1 0 0 0 0 0
Schuyler 0 0 0 0 0 0
Seneca 0 0 0 0 0 0
St. Lawrence 0 0 0 0 0 0
Steuben 0 0 0 0 0 0
Suffolk 23 12 0 0 0 0
Sullivan 0 0 0 0 0 0
Tioga 0 0 0 0 0 0
Tompkins 1 0 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 0 0 0 0 0 0
Westchester 0 2 1 (0)3 0 0 0
Wyoming 0 0 0 0 0 0
Yates 0 0 0 0 0 0
 
Bronx (NYC) 6 36 2 (0)4 0 0 0
Brooklyn (NYC) 5 5 7 (1)5 0 0 0
Manhattan (NYC) 0 5 1 (0)6 0 0 0
Queens (NYC) 10 96 7 (1)7 0 0 0
Staten Island (NYC) 9 30 1 (0) 0 0 0
New York City (Total) 30 172 18 (2) 0 0 0
 
New York State (Total) 83 264 22 (2) 0 0 0
  • 1 Number in parentheses indicates number of deaths.
  • 2 One patient likely acquired the infection out of state.
  • 3 Infection was likely acquired out of state.
  • 4 One patient has an unknown place of residence, but was hospitalized in the Bronx.
  • 5 Include three WN Fever cases.
  • 6 WN Fever case, likely acquired outside of NYC.
  • 7 Include one WN Fever case.

  • 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.