We investigated a case of dengue virus type 1 infection acquired in Benin. Phylogenetic analysis revealed the strain belongs to genotype V but clusters with Asian, rather than with known African, strains. Our finding suggests the introduction of Asian dengue virus in West Africa.
Keywords: Benin; France; West Africa; arboviruses; dengue virus; infection; mosquitoes; traveler; vector-borne infections; viruses.