Ontario Ministry of Health and Long-Term Care - Public Information - Public Health - West Nile Virus

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West Nile virus : 2003

Humans

Ministry of Health and Long-Term Care West Nile virus (WNv) Human Data**

The chart below shows probable and confirmed positive WNv tests on humans in Ontario in 2003.

Health Unit	Cases **
Brant	2
Chatham-Kent	1
Haliburton-Kawartha-Pine Ridges	1
Hamilton–Wentworth	4
Kingston	1
Middlesex–London	1
Niagara	5
Ottawa	4
Peel	10
Peterborough	1
Renfrew	1
Simcoe	1
Toronto	44
Waterloo	1
Windsor-Essex	10
York Region	2
ONTARIO TOTAL	89

*Note : A patient died from a stroke on September 3, 2003. The patient had secondary associated WNv encephalitis.
A patient died from aspiration pneumonia on September 5, 2003.
Both patients were listed as Probable WNv cases.

**Note : As of October 6, 2003, the Ministry of Health and Long-Term Care (MOHLTC) received the five requisite Plaque Reduction Neutralization Test (PRNT) confirmations of WNv cases in Ontario confirmed by Ontario Central Public Health Laboratory and the National Microbiological Laboratory (Winnipeg). As per MOHLTC policy, all positive IgM ELISA tests for WNv will now be classified as WNv cases and will no longer be reported separately as 'confirmed' or 'probable' cases.

Surveillance statistics are current as of 5:00 p.m. EST Monday through Friday.

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Call the ministry INFOline at 1-866-532-3161 (Toll-free in Ontario only) TTY 1-800-387-5559 Hours of operation : 8:30am - 5:00pm

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