September 15, 2003

York Region West Nile Virus Statistical Update

2003 York Region West Nile virus summary

8* Positive birds identified

4 Positive mosquito pools identified

0 Positive horses identified

1 Human case identified

* 5 confirmed positive and 3 presumptive positive

2003 York Region Bird Surveillance summary

3,383 Birds reported to York Region Health Services

339 Birds of concern identified

696 Birds collected

46 Birds submitted for testing

2003 York Region Mosquito Pool summary

336 Mosquito pools sent for testing

4 Positive mosquito pools

260 Negative mosquito pools

72 Mosquito pools results pending

2003 York Region Catch Basin Larviciding summary

First Round: 60,526 catch basins completed on June 27, 2003

Second Round: 68,923 catch basins completed on July 28, 2003

Third Round: 70,194 catch basins completed on August 26, 2003


2002 York Region West Nile virus summary

  1. Positive birds identified
  1. Positive mosquito pools identified
  1. Confirmed human cases identified
  1. Probable human cases identified

0 Deaths reported


Contact: Patrick Casey, Corporate Communications Services, York Region

- (905) 830-4444 ext. 1235 or (905) 715-8211 (Cell)

The Regional Municipality of York is committed to providing cost-effective, quality services that respond to the needs of our rapidly growing communities.  York Region is comprised of the following nine area municipalities:  Aurora, East Gwillimbury, Georgina, King, Markham, Newmarket, Richmond Hill, Vaughan and Whitchurch-Stouffville.  For more information, visit our Web site at:

Contact: Patrick Casey, Senior Media Relations Specialist, York Region

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