1921
Volume 82, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645

Abstract

Abstract.

West Nile virus (WNV) perpetuates in an enzootic transmission cycle involving mosquitoes and virus-competent avian hosts. In the northeastern United States, the enzootic vectors, and , feed preferentially on American robins (), suggesting a key role for this bird species in the WNV transmission cycle. We examined the role of American robin communal roosts as virus amplification foci in greater New Haven, Connecticut. Robin communal roosts were located by radio tracking. After mid-August, when most robins were using the roosts, and fed often on robins and were significantly more infected with WNV at communal roosts than at non-roosting sites. We also identified 6.4% human-derived blood meals in in communal roosts. Our results indicate that communal roosts act as late-season amplification foci facilitating transmission to humans because of high infection rates, high abundance, and feeding patterns of enzootic and bridge vectors.

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2010-02-01
2017-11-25
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  • Received : 31 Aug 2009
  • Accepted : 16 Nov 2009

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