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