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Am. J. Trop. Med. Hyg., 75(4), 2006, pp. 688-690
Copyright © 2006 by The American Society of Tropical Medicine and Hygiene

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WEST NILE VIRUS QUANTIFICATION IN FECES OF EXPERIMENTALLY INFECTED AMERICAN AND FISH CROWS

AARON M. KIPP, JENNIFER A. LEHMAN, RICHARD A. BOWEN, PATRICIA E. FOX, MICHAEL R. STEPHENS, KACI KLENK, NICHOLAS KOMAR*, AND MICHEL L. BUNNING
Division of Vector-Borne Infectious Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado; Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado; Office of the Surgeon General, United States Air Force, Bolling Air Force Base, Washington, District of Columbia

To better understand the potential environmental health risk presented by West Nile virus (WNV)-contaminated feces, we quantified the amount of WNV present in the feces of experimentally infected American crows (Corvus brachyrhynchos) and fish crows (Corvus ossifragus). Peak fecal titers ranged from 103.5 to 108.8 plaque-forming units (PFU)/g for 10 American crows and from 102.3 to 106.4 PFU/g for 10 fish crows. The presence of infectious WNV in bird feces indicates a potential for direct transmission of WNV. Thus, handlers of sick or dead birds should take appropriate precautions to avoid exposure to fecal material.

Received February 8, 2005. Accepted for publication June 24, 2006.

Acknowledgments: The authors thank the following for support of this study: The American Bird Conservancy, Maryland and Kansas Departments of Wildlife, Brent Davis, Jason Velez, Brian Ortman, Paul Gordy, and Paula Schneider.

* Address correspondence to Nicholas Komar, Division of Vector-Borne Infectious Diseases, Centers for Disease Control and Prevention, PO Box 2087, Fort Collins, CO 80522. E-mail: nck6{at}cdc.gov

Authors’ addresses: A. M. Kipp, The University of North Carolina at Chapel Hill, School of Public Health, Department of Epidemiology, McGavran-Greenberg Hall, CB#7435, Chapel Hill, NC 27599-7435. J. A. Lehman and N. Komar, Division of Vector-Borne Infectious Diseases, Centers for Disease Control and Prevention, PO Box 2087, Fort Collins, CO 80522, E-mail: jalehman{at}cdc.gov. R. A. Bowen and M. R. Stephens, Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523. P. E. Fox, Wisconsin Division of Public Health, Communicable Disease Epidemiology Section, PO Box 2659, Madison, WI 53701. K. Klenk, United States Department of Agriculture, Animal and Plant Health Inspection Service, National Wildlife Research Center, 4101 LaPorte Ave., Ft. Collins, CO 80524. M. L. Bunning, 59 Aerospace Medicine Squadron, 1515 Truemper Street, Lackland AFB, TX 78236.






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