Cotton rats and house sparrows as hosts for North and South American strains of eastern equine encephalitis virus.

Abstract:

:Eastern equine encephalitis virus (EEEV; family Togaviridae, genus Alphavirus) is an arbovirus that causes severe disease in humans in North America and in equids throughout the Americas. The enzootic transmission cycle of EEEV in North America involves passerine birds and the ornithophilic mosquito vector, Culiseta melanura, in freshwater swamp habitats. However, the ecology of EEEV in South America is not well understood. Culex (Melanoconion) spp. mosquitoes are considered the principal vectors in Central and South America; however, a primary vertebrate host for EEEV in South America has not yet been identified. Therefore, to further assess the reservoir host potential of wild rodents and wild birds, we compared the infection dynamics of North American and South American EEEV in cotton rats (Sigmodon hispidus) and house sparrows (Passer domesticus). Our findings suggested that each species has the potential to serve as amplification hosts for North and South America EEEVs.

journal_name

Emerg Infect Dis

authors

Arrigo NC,Adams AP,Watts DM,Newman PC,Weaver SC

doi

10.3201/eid1609.100459

subject

Has Abstract

pub_date

2010-09-01 00:00:00

pages

1373-80

issue

9

eissn

1080-6040

issn

1080-6059

journal_volume

16

pub_type

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