Additional mosquito samples from various areas of Suffolk County and a blue jay collected in Northport have tested positive for the West Nile virus, Suffolk County Health officials said Monday.

It's the first infected bird reported by the county. No human cases have been reported on Long Island this year.

The recent positive mosquito samples were collected earlier this month in Dix Hills, Lindenhurst, Melville, West Babylon, Saint James, Bay Shore, Holbrook, Holtsville, Aquebogue, Sayville and Rocky Point.

The virus, which has appeared annually since 1999, is spread to humans by mosquitoes that have been feeding on infected birds.

An infection can cause mild illness such as flu-like symptoms or more severe problems including neck stiffness and muscle weakness. Older people and those

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