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Potential of Aedes aegypti and Aedes albopictus populations in the Central African Republic to transmit enzootic chikungunya virus strains.
- Source :
-
Parasites & vectors [Parasit Vectors] 2017 Mar 27; Vol. 10 (1), pp. 164. Date of Electronic Publication: 2017 Mar 27. - Publication Year :
- 2017
-
Abstract
- Background: Major chikungunya outbreaks have affected several Central African countries during the past decade. The chikungunya virus (CHIKV) was isolated from humans and sylvan mosquitoes in the Central African Republic (CAR) during the 1970 and 1980s but has not been found recently, despite the presence of Aedes albopictus since 2010. The risk of a massive chikungunya epidemic is therefore potentially high, as the human populations are immunologically naïve and because of the presence of the mosquito vector. In order to estimate the risk of a large outbreak, we assessed the vector competence of local Ae. aegypti and Ae. albopictus populations for ancient local strains of CHIKV in CAR. Mosquitoes were orally infected with the virus, and its presence in mosquito saliva was analysed 7 and 14 days post-infection (dpi) by quantitative reverse transcriptase polymerase chain reaction.<br />Results: The two species had similar infection rates at 7 and 14 days, and the dissemination rate of both vectors was ≥ 80% at 14 dpi. Only females followed up to 14 dpi had CHKV in their saliva.<br />Conclusion: These results confirm the risk of transmission of enzootic CHIKV by anthropophilic vectors such as Ae. aegypti and Ae. albopictus.
- Subjects :
- Animals
Central African Republic epidemiology
Chikungunya Fever virology
Chikungunya virus classification
Chikungunya virus genetics
Disease Outbreaks prevention & control
Female
Humans
Polymerase Chain Reaction
Saliva virology
Aedes virology
Chikungunya Fever epidemiology
Chikungunya Fever transmission
Chikungunya virus isolation & purification
Mosquito Vectors virology
Subjects
Details
- Language :
- English
- ISSN :
- 1756-3305
- Volume :
- 10
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Parasites & vectors
- Publication Type :
- Academic Journal
- Accession number :
- 28347325
- Full Text :
- https://doi.org/10.1186/s13071-017-2101-0