West Nile's North American spread described

The rapid spread of West Nile virus in North America over the past decade is likely to have long-lasting ecological consequences throughout the continent, according to an article in the November issue of BioScience. The mosquito-borne virus, which was little known before its emergence in New York in 1999, has since been found in all 48 contiguous states.

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<p><a href="http://www.physorg.com/news144912524.html">West Nile's North American spread described</a></p> <p>The rapid spread of West Nile virus in North America over the past decade is likely to have long-lasting ecological consequences throughout the continent, according to an article in the November issue of <i>BioScience</i>. The mosquito-borne virus, which was little known before its emergence in New York in 1999, has since been found in all 48 contiguous states.</p>