West Nile Virus 2001 Report Released, Map Online for 2002 Cases

Cases of equine West Nile virus (WNV) infection have been reported in Florida, and a bird has tested positive in Louisiana. Keep up with the spread of WNV in 2002 with our WNV map of cases.

Current Map of West Nile Virus Infection in 2002 (updated 4-16-02)
U.S. West Nile Virus Infection in 2002 map

Further information on the Florida and Louisiana positive cases:
http://www.thehorse.com/ViewArticle.aspx?ID=3440
http://www.thehorse.com/ViewArticle.aspx?ID=3438
http://www.thehorse.com/ViewArticle.aspx?ID=3403

Following is the USDA official report of WNV activity in the U.S. in 2001.


Equine Cases of West Nile Virus Infection in 2001: January 1 through December 31, 2001.
There were 738 cases of clinical West Nile virus (WNV) infection reported in horses from 130 counties in 20 states (see the summary by state and county below). Of the 738 reported, 651 cases were verified through diagnostic testing at the National Veterinary Services Laboratories of USDA-APHIS. Of those, 640 were classified as confirmed cases and 11 as probable cases.

Of 470 horses for which an outcome has been reported, 156 (33.2%) died or were euthanized. The numbers of equine deaths associated with WNV infection by state were: Connecticut, 4; Delaware, 1; Florida, 82; Georgia, 22; Illinois, 1; Indiana, 1; Kentucky, 6; Louisiana, 3; Massachusetts, 1; Maryland, 1; Mississippi, 7; New Hampshire, 1; New Jersey, 15; New York, 2; North Carolina, 2; Pennsylvania, 4; Tennessee, 1; and Virginia, 2.

Summary of Equine Cases of Clinical WNV Infection by State and County: 1 Jan through 31 Dec 2001 (n = 738)

Alabama (3 counties, 4 horses)
Dale County (2 horses)
Dallas County (1 horse)
Mobile County (1 horse)

Connecticut (5 counties, 11 horses)
Hartford County (3 horses)
Middlesex County (1 horse)
New Haven County (1 horse)
New London County (5 horses)
Tolland County (1 horse)

Delaware (1 county, 1 horse)
Kent County (1 horse)

Florida (42 counties, 492 horses)
Alachua County (45 horses)
Baker County (6 horses)
Bay County (8 horses)
Bradford County (5 horses)
Broward County (1 horse)
Citrus County (6 horses)
Clay County (44 horses)
Columbia County (9 horses)
Dade County (1 horse)
Dixie County (1 horse)
Duval County (26 horses)
Flagler County (2 horses)
Gadsden County (4 horses)
Gilchrist County (5 horses)
Gulf County (3 horses)
Hamilton County (1 horse)
Hernando County (5 horses)
Holmes County (5 horses)
Jackson County (3 horses)
Jefferson County (36 horses)
Lafayette County (3 horses)
Lake County (8 horses)
Leon County (30 horses)
Levy County (10 horses)
Liberty County (2 horses)
Madison County (9 horses)
Marion County (89 horses)
Nassau County (15 horses)
Okaloosa County (1 horse)
Palm Beach County (3 horses)
Pasco County (1 horse)
Polk County (1 horse)
Putnam County (13 horses)
St. Johns County (11 horses)
Sumter County (5 horses)
Suwannee County (19 horses)
Taylor County (17 horses)
Union County (4 horses)
Volusia County (1 horse)
Wakulla County (10 horses)
Walton County (1 horse)
Washington County (11 horses)
county not yet reported (12 horses)

Georgia (26 counties, 68 horses)
Appling County (2 horses)
Bacon County (1 horse)
Bartow County (1 horse)
Berrien County (2 horses)
Brantley County (2 horses)
Brooks County (8 horses)
Camden County (2 horses)
Catoosa County (1 horse)
Charlton County (2 horses)
Clarke County (1 horse)
Clinch County (1 horse)
Coffee County (1 horse)
Cook County (2 horses)
Dougherty County (2 horses)
Echols County (1 horse)
Glynn County (4 horses)
Long County (2 horses)
Lowndes County (17 horses)
Muscogee County (1 horse)
Pierce County (1 horse)
Tattnall County (2 horses)
Thomas County (5 horses)
Tift County (1 horse)
Ware County (2 horses)
Wayne County (3 horses)
Worth County (1 horse)

Illinois (2 counties, 2 horses)
Cook County (1 horse)
Kane County (1 horse)

Indiana (1 county, 1 horse)
Fulton County (1 horse)

Kentucky (8 counties, 8 horses)
Bourbon County (1 horse)
Bullitt County (1 horse)
Fayette County (1 horse)
Fleming County (1 horse)
Jefferson County (1 horse)
Jessamine County (1 horse)
Oldham County (1 horse)
Woodford County (1 horse)

Louisiana (4 parishes, 9 horses)
Calcasieu Parish (1 horse)
Iberia Parish (1 horse)
Plaquemines Parish (1 horse)
Vermilion Parish (6 horses)

Maryland (1 county, 2 horses)
Baltimore County (2 horses)

Massachusetts (4 counties, 45 horses)
Barnstable County (1 horse)
Bristol County (5 horses)
Middlesex County (1 horse)
Plymouth County (38 horses)

Mississippi (4 counties, 17 horses)
Coahoma County (1 horse)
Itawamba County (2 horses)
Lee County (13 horses)
Prentiss County (1 horse)

New Hampshire (1 county, 2 horses)
Rockingham County (2 horses)

New Jersey (10 counties, 33 horses)
Atlantic County (1 horse)
Bergen County (1 horse)
Burlington County (14 horses)
Camden County (1 horse)
Cumberland County (1 horse)
Gloucester County (3 horses)
Hunterdon County (1 horse)
Middlesex County (1 horse)
Monmouth County (9 horses)
Salem County (1 horse)

New York (3 counties, 22 horses)
Nassau County (4 horses)
Orange County (1 horse)
Suffolk County (17 horses)

North Carolina (4 counties, 6 horses)
Camden County (1 horse)
Hyde County (2 horses)
Pasquotank County (2 horses)
Tyrrell County (1 horse)

Pennsylvania (4 counties, 7 horses)
Bucks County (2 horses)
Chester County (2 horses)
Delaware County (1 horse)
Montgomery County (2 horses)

Rhode Island (1 county, 1 horse)
Washington County (1 horse)

Tennessee (1 county, 1 horse)
Greene County (1 horse)

Virginia (5 counties, 6 horses)
Chesapeake County (2 horses)
Madison County (1 horse)
Rockingham County (1 horse)
Southampton County (1 horse)
Suffolk County (1 horse)

About the Author

Christy M. West

Christy West has a BS in Equine Science from the University of Kentucky, and an MS in Agricultural Journalism from the University of Wisconsin-Madison.

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