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"Avian Influenza." Wikipedia, the Free Encyclopedia. Wikimedia Foundation, Inc. Web. 11 Oct. 2011. http://en.wikipedia.org/wiki/Avian_influenza

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“Protecting Workers from Avian Influenza - NIOSH Workplace Safety and Health Topic." Centers for Disease Control and Prevention. Web. 11 Oct. 2011. http://wwwnc.cdc.gov/eid/article/17/4/10-1604_article.htm

Swain, Liz. "Bird flu." The Gale Encyclopedia of Medicine. Detroit: Gale, 2005. Gale Science In Context. Web. 11 Oct. 2011. http://ic.galegroup.com/ic/scic/ReferenceDetailsPage/ReferenceDetailsWindow?displayGroupName=Reference&disableHighlighting=false&prodId=SCIC&action=e&windowstate=normal&catId=&documentId=GALE|A149657198&mode=view