The virus, which mainly infects birds and is transmitted to humans by mosquitoes, killed seven people and made 46 others ill when it struck New York last year. There have been no new infections since last summer but Canada is taking no chances.
Experts suspect the virus was brought into New York by an exotic bird.
Canadian officials plan to test the chickens once a week to determine whether they have the virus. Copyright 2000 Reuters. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Click here for Terms of Use and Privacy Policy and Internet Safety Information applicable to this site.