title: Sustained transmission of dengue virus type 1 in the Pacific due to repeated introductions of different Asian strains.
abstract: Outbreaks of dengue due to dengue virus type 1 (DENV-1) occurred almost simultaneously in 2001 in Myanmar and at multiple sites almost 10,000 km away in the Pacific. Phylogenetic analyses of the E protein genes of DENV-1 strains recovered from Asia and the Pacific revealed three major viral genotypes (I, II, and III) with distinct clades within each. The majority of strains from the Pacific and Myanmar, and a number of other Asian strains fell into genotype I. Genotype II comprised a smaller set of Asian and Pacific strains, while genotype III contained viruses from diverse geographical localities. These analyses suggested that the continuing outbreak of dengue in the Pacific has been due to multiple, direct, introductions of dengue viruses from a variety of locations in Asia followed by local transmission. There was no evidence that the introduction of these viruses into the Pacific was associated with any adaptive changes in the E protein of the viruses.
authors.affiliation: National Institute of Health, Department of Medical Science, Bangkok, Thailand.
authors.forename: Atchareeya
authors.initials: A
authors.lastname: A-Nuegoonpipat
authors.forename: Alain
authors.initials: A
authors.lastname: Berlioz-Arthaud
authors.forename: Vincent
authors.initials: V
authors.lastname: Chow
authors.forename: Tim
authors.initials: T
authors.lastname: Endy
authors.forename: Kym
authors.initials: K
authors.lastname: Lowry
authors.forename: Le Quynh
authors.initials: le Q
authors.lastname: Mai
authors.forename: Truong Uyen
authors.initials: TU
authors.lastname: Ninh
authors.forename: Alyssa
authors.initials: A
authors.lastname: Pyke
authors.forename: Mark
authors.initials: M
authors.lastname: Reid
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Reynes
authors.forename: Se-Thoe
authors.initials: ST
authors.lastname: Su Yun
authors.forename: Hlaing Myat
authors.initials: HM
authors.lastname: Thu
authors.forename: Sook-San
authors.initials: SS
authors.lastname: Wong
authors.forename: Edward C
authors.initials: EC
authors.lastname: Holmes
authors.forename: John
authors.initials: J
authors.lastname: Aaskov
mesh_terms: D000818:Animals; D001208:Asia / Q000453:epidemiology; D003715:Dengue / Q000453:epidemiology* / Q000635:transmission*; D003716:Dengue Virus / Q000235:genetics*; D004196:Disease Outbreaks; D005367:Fiji / Q000453:epidemiology; D005838:Genotype; D006801:Humans; D017720:Molecular Epidemiology; D009510:New Caledonia / Q000453:epidemiology; D010802:Phylogeny; D014759:Viral Envelope Proteins / Q000235:genetics
chemical_list: D014759:Viral Envelope Proteins