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Vector Contact Rates on Eastern Bluebird Nestlings Do Not Indicate West Nile Virus Transmission in Henrico County, Virginia, USA

Author

Listed:
  • Kevin A. Caillouët

    (St. Tammany Parish Mosquito Abatement District, 62512 Airport Rd. Bldg. 23, Slidell, LA 70460, USA
    Department of Biology, Virginia Commonwealth University, 1000 West Cary St., Richmond, VA 23284, USA)

  • Charles W. Robertson

    (Department of Biology, Virginia Commonwealth University, 1000 West Cary St., Richmond, VA 23284, USA
    These authors contributed equally to this work.)

  • David C. Wheeler

    (Department of Biostatistics, Virginia Commonwealth University, 830 East Main St., Richmond, VA 23219, USA
    These authors contributed equally to this work.)

  • Nicholas Komar

    (Division of Vector Borne Infectious Diseases, Centers for Disease Control and Prevention, 3150 Rampart Rd., Fort Collins, CO 80521, USA
    These authors contributed equally to this work.)

  • Lesley P. Bulluck

    (Department of Biology, Virginia Commonwealth University, 1000 West Cary St., Richmond, VA 23284, USA)

Abstract

Sensitive indicators of spatial and temporal variation in vector-host contact rates are critical to understanding the transmission and eventual prevention of arboviruses such as West Nile virus (WNV). Monitoring vector contact rates on particularly susceptible and perhaps more exposed avian nestlings may provide an advanced indication of local WNV amplification. To test this hypothesis we monitored WNV infection and vector contact rates among nestlings occupying nest boxes (primarily Eastern bluebirds; Sialia sialis , Turdidae) across Henrico County, Virginia, USA, from May to August 2012. Observed host-seeking rates were temporally variable and associated with absolute vector and host abundances. Despite substantial effort to monitor WNV among nestlings and mosquitoes, we did not detect the presence of WNV in these populations. Generally low vector-nestling host contact rates combined with the negative WNV infection data suggest that monitoring transmission parameters among nestling Eastern bluebirds in Henrico County, Virginia, USA may not be a sensitive indicator of WNV activity.

Suggested Citation

  • Kevin A. Caillouët & Charles W. Robertson & David C. Wheeler & Nicholas Komar & Lesley P. Bulluck, 2013. "Vector Contact Rates on Eastern Bluebird Nestlings Do Not Indicate West Nile Virus Transmission in Henrico County, Virginia, USA," IJERPH, MDPI, vol. 10(12), pages 1-14, November.
    • Handle: RePEc:gam:jijerp:v:10:y:2013:i:12:p:6366-6379:d:30800
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    References listed on IDEAS

    as
    1. Ting-Wu Chuang & Michael C Wimberly, 2012. "Remote Sensing of Climatic Anomalies and West Nile Virus Incidence in the Northern Great Plains of the United States," PLOS ONE, Public Library of Science, vol. 7(10), pages 1-10, October.
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