West Nile Story - One Year Later (PDF) From DUC's Conservator magazine, Dr. Dale Wrubleski updates us on the story of West Nile virus (2004).
West Nile Story
From DUC's Conservator magazine, Dr. Dale Wrubleski uses his entomology expertise to provide us with a valuable insight into West Nile virus (2003).

History of West Nile Virus

1937: first identified in Uganda; has since been found in Africa, Europe, the Middle East, and west and central Asia.
1999: identified in North America around New York City.
2000: virus spreads to adjoining states.
2001: virus spreads west to the Mississippi River, positive birds in Ontario.
2002: first records of human disease in southern Ontario and Quebec; positive birds from Nova Scotia to Saskatchewan.
2003: the virus spread to Alberta and New Brunswick.
2004: relatively little activity in Canada.
2005: the virus is reported in all continental U.S. states and in five Canadian provinces.
2006: human cases of the virus are reported in 43 states and five provinces. B.C. recorded its first ever case of the virus in a horse, which health officials believe may have been contracted while it was traveling in Colorado.
2007: highest number of human cases recorded in Canada at 2,381
2008: a low number of cases reported in Canada
2009: very little activity in Canada; first human infections in B.C.

<< Page 1 Introduction
Page 3 How it's transmitted >>