Centers for Disease Control and Prevention.Division of Vector-Borne Infectious Diseases. West Nile Virus. Questions and Answers: Prevention. Available at: http://www.cdc.gov/ncidod/dvbid/westnile/qa/prevention.htm. Accessed December 2002.
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Centers for Disease Control and Prevention.Division of Vector-Borne Infectious Disease. West Nile Virus. Questions and Answers: Blood Transfusions and Organ Donations. Available at: http://www.cdc.gov/ncidod/dvbid/westnile/qa/transfusion.htm. Accessed December 2002.