Incrimination of Aedes (Stegomyia) hensilli Farner as an epidemic vector of Chikungunya virus on Yap Island, Federated States of Micronesia, 2013.

Autor(es): Savage Harry M; Ledermann Jeremy P; Yug Laurence; Burkhalter Kristen L; Marfel Maria; Hancock W Thane

Resumo: Two species of Aedes (Stegomyia) were collected in response to the first chikungunya virus (CHIKV) outbreak on Yap Island: the native species Ae. hensilli Farner and the introduced species Ae. aegypti (L.). Fourteen CHIKV-positive mosquito pools were detected. Six pools were composed of female Ae. hensilli, six pools were composed of female Ae. aegypti, one pool was composed of male Ae. hensilli, and one pool contained female specimens identified as Ae. (Stg.) spp. Infection rates were not significantly different between female Ae. hensilli and Ae. aegypti. The occurrence of human cases in all areas of Yap Island and the greater number of sites that yielded virus from Ae. hensilli combined with the ubiquitous distribution of this species incriminate Ae. hensilli as the most important vector of CHIKV during the outbreak. Phylogenic analysis shows that virus strains on Yap are members of the Asia lineage and closely related to strains currently circulating in the Caribbean.

Imprenta: The American Journal of Tropical Medicine and Hygiene, v. 92, n. 2, p. 429-436, 2015

Identificador do objeto digital: 10.4269/ajtmh.14-0374.

Descritores: Aedes aegypti - DNA ; Aedes aegypti - Pathogenesis ; Aedes aegypti - Viral infections ; Aedes aegypti - Real Time PCR ; Aedes aegypti - Virus ; Aedes aegypti - Transmission ; Aedes aegypti - Chikungunya Fever ; Aedes aegypti - Epidemic ; Aedes aegypti - Epidemiology ; Aedes aegypti - Public health

Data de publicação: 2015