Large Genetic Differentiation and Low Variation in Vector Competence for Dengue and Yellow Fever Viruses of Aedes Albopictus From Brazil, the United States, and the Cayman Islands

Oliveira, Ricardo Lourenço de; Vazeille, Marie; Filippis, Ana María Bispo de; Failloux, Anna‐Bella

doi:10.4269/ajtmh.2003.69.105

Cited by 89 publications

(37 citation statements)

References 43 publications

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“…A number of factors may account for the variation in results observed in the current experiments and those findings by Russell and others, 24 including differences in mosquito and virus strains, number of virus passages before infection, number of mosquito generations in colony since field collection, method of virus assay, artificial feeding technique used, and titer of the infectious blood meal. 25,26 Regardless, the results of all three of our experiments clearly show that Ae. notoscriptus could serve as a potential vector of YFV in Australia.…”

Section: Discussionmentioning

confidence: 72%

Vector Competence of Australian Mosquitoes for Yellow Fever Virus

Hurk¹,

McElroy²,

Pyke³

et al. 2011

The American Society of Tropical Medicine and Hygiene

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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 107.2 tissue culture infectious dose (TCID50)/mL of an African strain of YFV, > 70% of Ae. aegypti and Ae. notoscriptus became infected, and > 50% transmitted the virus. When exposed to 106.7 TCID50/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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Section: Discussionmentioning

confidence: 72%

Vector Competence of Australian Mosquitoes for Yellow Fever Virus

Hurk¹,

McElroy²,

Pyke³

et al. 2011

The American Society of Tropical Medicine and Hygiene

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“…albopictus, 37 another competent vector. 32,34,38,39 Because the geographical distributions of the two species are dynamic and imprecisely known and because the relative importance of each species to YFV transmission is not well-understood, we did not attempt to model any differences between them.…”

Section: Discussionmentioning

confidence: 99%

Assessing the Risk of International Spread of Yellow Fever Virus: A Mathematical Analysis of an Urban Outbreak in Asunción, 2008

Johansson¹,

Arana-Vizcarrondo²,

Biggerstaff³

et al. 2012

The American Society of Tropical Medicine and Hygiene

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Abstract. Yellow fever virus (YFV), a mosquito-borne virus endemic to tropical Africa and South America, is capable of causing large urban outbreaks of human disease. With the ease of international travel, urban outbreaks could lead to the rapid spread and subsequent transmission of YFV in distant locations. We designed a stochastic metapopulation model with spatiotemporally explicit transmissibility scenarios to simulate the global spread of YFV from a single urban outbreak by infected airline travelers. In simulations of a 2008 outbreak in Asunció n, Paraguay, local outbreaks occurred in 12.8% of simulations and international spread in 2.0%. Using simple probabilistic models, we found that local incidence, travel rates, and basic transmission parameters are sufficient to assess the probability of introduction and autochthonous transmission events. These models could be used to assess the risk of YFV spread during an urban outbreak and identify locations at risk for YFV introduction and subsequent autochthonous transmission.

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“…Although A. albopictus has been found to be less susceptible to YFV than several A. aegypti samples tested from Brazil, A. albopictus may continue to colonize non-urban areas of the country, becoming more abundant in rural areas and endemic and transition areas for sylvatic YF at the forest fringes. Thus, this species could become a real problem, because it could become a link between the jungle and urban cycles of YF 5–7…”

Section: Introductionmentioning

confidence: 99%

Description of a Prospective 17DD Yellow Fever Vaccine Cohort in Recife, Brazil

Melo

Silva²,

Magalhães³

et al. 2011

The American Society of Tropical Medicine and Hygiene

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From September 2005 to March 2007, 238 individuals being vaccinated for the first time with the yellow fever (YF) -17DD vaccine were enrolled in a cohort established in Recife, Brazil. A prospective study indicated that, after immunization, anti-YF immunoglobulin M (IgM) and anti-YF IgG were present in 70.6% (IgM) and 98.3% (IgG) of the vaccinated subjects. All vaccinees developed protective immunity, which was detected by the plaque reduction neutralization test (PRNT) with a geometric mean titer of 892. Of the 238 individuals, 86.6% had IgG antibodies to dengue virus; however, the presence of anti-dengue IgG did not interfere significantly with the development of anti-YF neutralizing antibodies. In a separate retrospective study of individuals immunized with the 17DD vaccine, the PRNT values at 5 and 10 years post-vaccination remained positive but showed a significant decrease in neutralization titer (25% with PRNT titers < 100 after 5 years and 35% after 10 years).

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Large Genetic Differentiation and Low Variation in Vector Competence for Dengue and Yellow Fever Viruses of Aedes Albopictus From Brazil, the United States, and the Cayman Islands

Cited by 89 publications

References 43 publications

Vector Competence of Australian Mosquitoes for Yellow Fever Virus

Vector Competence of Australian Mosquitoes for Yellow Fever Virus

Assessing the Risk of International Spread of Yellow Fever Virus: A Mathematical Analysis of an Urban Outbreak in Asunción, 2008

Description of a Prospective 17DD Yellow Fever Vaccine Cohort in Recife, Brazil

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