Article Dans Une Revue International Journal of Infectious Diseases Année : 2019

Re-emergence of chikungunya in the Republic of the Congo in 2019 associated with a possible vector-host switch

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In January 2019, an outbreak of chikungunya virus fever was reported in a rural region near Pointe-Noire, Republic of the Congo. Molecular and phylogenetic analysis of this new CHIKV strain demonstrated the presence of the A226V substitution and a surprisingly close relation with Aedes aegypti-associated Central Africa chikungunya strains. These results, combined with the preponderance of Aedes albopictus in the outbreak area, suggest a recent vector-host switch facilitated by the emergence and spread of the A226V mutation from a related CHIKV strain previously circulating in Aedes aegypti. The proximity of this outbreak to the large city of Pointe-Noire alerts us to a possibly devastating future outbreak in the absence of measures limiting the proliferation of Ae. albopictus mosquitoes.
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hal-04921069 , version 1 (30-01-2025)

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Matthieu Fritz, Raphaël Taty Taty, Chantale Portella, Christ Guimbi, Michel Mankou, et al.. Re-emergence of chikungunya in the Republic of the Congo in 2019 associated with a possible vector-host switch. International Journal of Infectious Diseases, 2019, 84, pp.99-101. ⟨10.1016/j.ijid.2019.05.013⟩. ⟨hal-04921069⟩
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