Journal
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
Volume 85, Issue 3, Pages 446-451Publisher
AMER SOC TROP MED & HYGIENE
DOI: 10.4269/ajtmh.2011.11-0061
Keywords
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Funding
- Queensland International Fellowship
- National Institutes of Health [UC7 AI070083]
- Centers for Disease Control [(R36) PAR07-231]
- Australian Biosecurity Cooperative Research Centre for Emerging Infectious Disease
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The vector competence of Australian mosquitoes for yellow fever virus (YFV) was evaluated. Infection and transmission rates in Cairns and Townsville populations of Aedes aegypti and a Brisbane strain of Ae. notoscriptus were not significantly different from a well-characterized YFV-susceptible strain of Ae. aegypti. After exposure to 10(7.2) tissue culture infectious dose (TCID(50))/mL of an African strain of YFV, > 70% of Ae. aegypti and Ae. notoscriptus became infected, and > 50% transmitted the virus. When exposed to 10(6.7) TCID(50)/mL of a South American strain of YFV, the highest infection (64%) and transmission (56%) rates were observed in Ae. notoscriptus. The infection and transmission rates in the Cairns Ae. aegypti were both 24%, and they were 36% and 28%, respectively, for the Townsville population. Because competent vectors are present, the limited number of travelers from endemic areas and strict vaccination requirements will influence whether YFV transmission occurs in Australia.
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