Dallas Morning News, Oct. 1, 2006http://www.dallasnews.com/sharedcontent/dws/news/nation/stories/DN-westnile_01nat.ART.State.Edition1.3f433c2.html http://www.dallasnews.com/sharedcontent/dws/news/localnews/stories/DN westnile_01nat.ART.State.Edition1.3f433c2.html Quotes UTMB researcher Robert Tesh.