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A dead crow in Chicago has tested positive for West Nile virus, bringing to three the number of Illinois birds found this year to be infected with the disease.
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Infected birds were also found in Henderson County and Kankakee County this year after testing began May 1.
In 2002, Illinois led the nation in the number of illnesses from the mosquito-borne virus, including 884 cases of West Nile and 64 deaths.
Chicago had 225 reported cases and 20 deaths last year.