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Volume 10, Number 9—September 2004

Dispatch

Yellow Fever Virus Infectivity for Bolivian Aedes aegypti Mosquitoes

John-Paul Mutebi*, Alberto Gianella†, Amelia Travassos da Rosa‡, Robert B. Tesh‡, Alan D. T. Barrett‡, and Stephen Higgs‡Comments to Author 
Author affiliations: *Chicago Department of Public Health, Chicago, Illinois, USA; †CENETROP, Santa Cruz, Bolivia; ‡University of Texas Medical Branch, Galveston, Texas, USA

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Table 2

Transmission of yellow fever virus by infected Aedes aegypti mosquitoes to suckling micea

Ae. aegypti strain Virus strain No. mice infected/
No. exposed (%) HI titer for 4 U of antigen
YFV SLEV WNV
Santa Cruz- CENETROP-322 1/5 (20)b 0 0 0
0 0 0
320 0 0
0 0 0
0 0 0
REX-D Jimenez 4/5 (80)c NT NT NT
NT NT NT
NT NT NT
NT NT NT
NT NT NT
REX-D Asibi 3/5 (60)b 160 0 0
0 0 0
0 0 0
80 0 0
40 0 0

aHI, hemagluttination-inhibition; YFV, yellow fever virus; SLEV, St. Louis encephalitis virus; WNV, West Nile virus; NT, not tested.
bInfection determined by presence of anti-YF antibodies in mice sera (HI test). 0 indicates a titer of <1:20.
cInfection determined by death/virus detection for suckling mice.

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