Are Aedes albopictus or other mosquito species from northern Italy competent to sustain new arboviral outbreaks?
Autor(es): Talbalaghi A, Moutailler S, Vazeille M, Failloux A-B
Resumo: The Asian tiger mosquito Aedes albopictus (Skuse) (Diptera: Culicidae), native to Southeast Asia, has extended its geographical distribution to invade new temperate - tropical regions. This species was introduced in 1990 to Italy - has since become the main pest in urban settings. It was incriminated as a principal vector in the first European outbreak of chikungunya virus (CHIKV) in the province of Ravenna (Italy) in 2007. This outbreak was associated with CHIKV E1-226V, efficiently transmitted by Ae. albopictus. The occurrence of this outbreak in a temperate country led us to estimate the potential of Ae. albopictus to transmit CHIKV - dengue virus (DENV), - to determine the susceptibility to CHIKV of other mosquito species collected in northern Italy. Experimental infections showed that Ae. albopictus exhibited high disseminated infection rates for CHIKV (75.0% in Aless-ria; 90.3% in San Lazzaro) - low disseminated infection rates for DENV-2 (14.3% in San Lazzaro; 38.5% in Aless-ria). Moreover, Ae. albopictus was able to attain a high level of viral replication, with CHIKV detectable in the salivary gl-s at day 2 after infection. In addition, the other three mosquito species, Anopheles maculipennis Meigen, Aedes vexans vexans (Meigen) - Culex pipiens L., showed variable susceptibilities to infection with CHIKV, of 0%, 7.7% - 0-33%, respectively. This information on vector competence is crucial in assessing the risk for an outbreak of CHIKV or DENV in Italy.
Imprenta: Medical and Veterinary Entomology, v. 24, n. 1, p. 83-87, 2010
Identificador do Objeto Digital: 10.1111/j.1365-2915.2009.00853.x
Descritores: Chikungunya virus - Flaviviridae ; Chikungunya virus - Pathogenesis ; Chikungunya virus - RNA ; Chikungunya virus - Viral infections ; Chikungunya virus - RT-PCR ; Chikungunya Virus - Virus ; Chikungunya virus - Transmission ; Chikungunya virus - Dengue ; Chikungunya virus - Epidemiology ; Chikungunya virus - Public health
Data de Publicação: 2010
