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

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West Nile virus : 2003

Mosquitoes

Region	First Positive Pool Found	Last Positive Pool Found	Total Positive Pools
Brant	August 26, 2003	August 26, 2003	1
Durham	August 8, 2003	August 14, 2003	2
Haldimand - Norfolk	July 8, 2003	July 8, 2003	1
Haliburton - Kawartha	August 12, 2003	August 25, 2003	2
Halton	July 24, 2003	September 10, 2003	19
Hamilton	September 3, 2003	September 16, 2003	2
Middlesex - London	August 13, 2003	August 20, 2003	2
Niagara *	September 3, 2003	September 4, 2003	8
Ottawa	August 12, 2003	August 29, 2003	3
Oxford	August 13, 2003	August 13, 2003	1
Peel	July 24, 2003	September 23, 2003	24
Porcupine	August 26, 2003	August 26, 2003	1
Toronto	August 12, 2003	October 21, 2003	56
Waterloo	August 29, 2003	August 29, 2003	1
Wellington - Dufferin	August 12, 2003	August 12, 2003	1
Windsor	August 19, 2003	September 16, 2003	5
York Region	July 30, 2003	September 18, 2003	6
ONTARIO TOTAL			135

* A graduate student at Brock University conducting research into the behaviour of bird-biting mosquitoes recently found eight pools of West Nile virus-positive mosquitoes in the Niagara region. Although the results did not form part of the Health Unit surveillance program, they have been included in our statistics for the Region of Niagara.

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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