West Nile Virus - Ontario Equine Cases 2002

Summary of laboratory-diagnosed Ontario WNV cases submitted through the Animal Health Laboratory, University of Guelph and Michigan State University diagnostic laboratory

West Nile Virus Surveillance-Horses (as of Dec 31, 2002)

Region

Date of first case

Date of last case

Status

Hamilton-Wentworth

Aug 22/02

Oct 1/02

3 confirmed

York

Aug 26/02

Sept 10/02

4 confirmed

Niagara

Aug 29/02

Oct 25/02

12 confirmed

Haldimand-Norfolk

Sept 9/02

Oct 18/02

9 confirmed

Toronto
Sept 4/02 Sept 19/02 6 confirmed
Halton
Sept 10/02 Oct 4/02 4 confirmed

Waterloo

Sept 9/02

Nov 19/02

4 confirmed
1 probable

Wellington

Sept 26/02

 

1 confirmed

Parry Sound-Muskoka

Oct 16/02

 

1 confirmed

Northwestern

Sept 3/02

Oct 2/02

1 confirmed
1 probable

Ottawa

Sept 16/02

 

1 confirmed

Perth

Sept 20/02

 

1 confirmed

Oxford

Sept 17/02

Oct 23/02

2 confirmed
1 probable

Brant

Sept 24/02

Nov 14/02

4 confirmed

Middlesex

Sept 30/02

 

1 confirmed

Lambton

Sept 3/02

Oct 22/02

6 confirmed

Chatham-Kent

Sept 3/02

Sept 11/02

3 confirmed

Windsor-Essex

Aug 19/02

Nov 1/02

38 confirmed
3 probable

Total: 101 confirmed, 6 probable

West Nile Virus Surveillance - Equine Cases by County in 2002

A map of Ontario showing the confirmed cases of west nile virus in horses by county.
Actual known locations of cases as follows:

Hamilton-Wentworth (Dundas, Burlington)
York (Aurora, Mt. Albert, Newmarket, Schomberg)
Niagara (Niagara-on-the-lake, Fonthill, Ft. Erie, Wainfleet, Smithville, Wellandport)
Haldimand (Dunnville, Cayuga, Waterford, Caledonia, Jarvis)
Toronto (Woodbine, Toronto)
Waterloo (Elmira, Kitchener, Waterloo, New Hamburg)
Wellington (Ariss)
Northwestern (Ft. Frances)
Lambton (Wyoming, Sarnia, Bright's Grove, Sombra)
Chatham-Kent (Chatham, Bleinheim)
Windsor-Essex (Amherstburg, Oldcastle, Wheatley, Essex, Bell River, Tilbury)
Halton (Oakville, Mohawk, Milton)
Ottawa (Richmond)
Perth (Bornholm)
Oxford (Drumbo, Mt Elgin, Norwich)
Brant (Burford, Paris, Ohsweken)
Muskoka (Utterson)
Middlesex (Strathroy)


For more information:
Toll Free: 1-877-424-1300
E-mail: ag.info.omafra@ontario.ca
Author: Dr. Paul Innes - Veterinary Scientist, Epidemiology/OMAFRA
Creation Date: February 2003
Last Reviewed: February 2003