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Volume 9, Number 10—October 2003
Dispatch

West Nile Virus Transmission in Resident Birds, Dominican Republic

Oliver Komar*Comments to Author , Mark B. Robbins*, Kaci Klenk†, Bradley J. Blitvich‡, Nicole L. Marlenee‡, Kristen L. Burkhalter†, Duane J. Gubler†, Guillermo Gonzálvez§, Carlos J. Peña§, A. Townsend Peterson*, and Nicholas Komar†
Author affiliations: *University of Kansas, Lawrence, Kansas, USA; †Centers for Disease Control and Prevention, Fort Collins, Colorado, USA; ‡Colorado State University, Fort Collins, Colorado, USA; §Centro Nacional de Control de Enfermedades Tropicales, Santo Domingo, Dominican Republic

Main Article

Table

Laboratory results for flavivirus-seropositive birds collected in the Dominican Republic, 2002a

Species KUNHM catalog no. Date sampled Age and sexb Locality SLEV
PRNT90 WNV PRNT90 % inhibition by ELISAc Result
Ruddy quail-dove
(Geotrygon montana)
 94667
 21 Nov
 Immature male
 Los Haitises
 <10d
 20d
 40
 WNV
Mangrove cuckoo
(Coccyzus minor)
 94671
 19 Nov
 Adult femalee
 Los Haitises
 <10
 160
 81
 WNV
Hispaniolan lizard cuckoo
(Saurothera longirostris)
 94669
 18 Nov
 Adult female
 Los Haitises
 160
 640
 73
 WNV
Hispaniolan lizard cuckoo
(Saurothera longirostris)
 94670
 21 Nov
 Adult male
 Los Haitises
 <10
 40
 23
 FLAV
Hispaniolan trogon
(Priotelus roseigaster)
 94951
 12 Nov
 Adult male
 Sierra de Baoruco
 <10
 10
 6
 FLAV
Red-legged thrush
(Turdus plumbeus)
 94956
 20 Nov
 Adult femalee
 Los Haitises
 10
 160
 86
 WNV
Red-legged thrush
(Turdus plumbeus)
 94689
 19 Nov
 Adult malee
 Los Haitises
 <10
 80
 not available
 FLAV
Red-legged thrush
(Turdus plumbeus)
 94691
 21 Nov
 Adult female
 Los Haitises
 20
 1280
 61
 WNV
Greater Antillean grackle
(Quiscalus niger) 94949 19 Nov Adult male Los Haitises 640 40 42 FLAVf

aELISA, enzyme-linked immunosorbent assay; FLAV, undifferentiated flavivirus; KUNHM, University of Kansas Natural History Museum, Division of Ornithology; PRNT90, reciprocal 90% plaque reduction neutralization titer; SLEV, Saint Louis encephalitis virus; WNV, West Nile virus.
bBirds were in nonbreeding condition unless otherwise indicated.
cInhibition values >30% were considered significant.
dValues represent reciprocal titers; threshold of detection was 1:10.
eBreeding condition, as determined by size of gonads.
fAlthough serologic results based upon PRNT would suggest that this specimen be identified as SLEV antibody–positive, the WNV antibody–positive result in the blocking ELISA indicates that this specimen was possibly positive for both SLEV and WNV. However, secondary flavivirus infections are notorious for heterologous reactivity, so infection by WNV or other flaviviruses causing these reactions could not be ruled out. Hence, the determination as FLAV.

Main Article

Page created: January 10, 2011
Page updated: January 10, 2011
Page reviewed: January 10, 2011
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