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Volume 17, Number 5—May 2011

Letter

Dengue Virus Serotype 4, Roraima State, Brazil

José Gomes Temporão, Gerson Oliveira Penna, Eduardo Hage Carmo, Giovanini Evelim Coelho, Raimunda do Socorro Silva Azevedo, Márcio Roberto Teixeira Nunes, and Pedro F.C. VasconcelosComments to Author 
Author affiliations: Author affiliations: Ministry of Health Brasília, Brasilia, Brazil (J.G. Temporão, G.O. Penna); University of Brasília, Brasilia (G.O. Penna); Secretariat of Health Surveillance, Brasilia (E.H. Carmo, G.E. Coelho); Evandro Chagas Institute, Ananindeua, Brazil (R. do Socorro Silva Azevedo, M.R.T. Nunes, P.F. da Costa Vasconcelos)

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Figure

A) Boa Vista, Roraima State, Brazil, showing the districts where dengue virus type 4 (DENV-4) was isolated. 1, Liberdade; 2, Buritis; 3, Cauamé; 4, Santa Tereza; 5, Cidade Satélite; 6, Dr. Silvio Leite; 7, Joquel Clube; 8, Sen. Hélio Campos. B) Phylogenetic analysis of the DENV-4 envelope gene sequences (in boldface) constructed by using the neighbor-joining method, showing the cluster formed by Boa Vista and Venenzuela DENV-4 genotype I strains. Bootstrap values were set for 1,000 replicates an

Figure. A) Boa Vista, Roraima State, Brazil, showing the districts where dengue virus type 4 (DENV-4) was isolated. 1, Liberdade; 2, Buritis; 3, Cauamé; 4, Santa Tereza; 5, Cidade Satélite; 6, Dr. Silvio Leite; 7, Joquel Clube; 8, Sen. Hélio Campos. B) Phylogenetic analysis of the DENV-4 envelope gene sequences (in boldface) constructed by using the neighbor-joining method, showing the cluster formed by Boa Vista and Venenzuela DENV-4 genotype I strains. Bootstrap values were set for 1,000 replicates and are placed over each main node of the tree. ROR1982 represents the DENV-4 isolated in Roraima State during the 1982 epidemic. A to B1–B4 represent genotype I subclades. Thailand 1978 and Thailand 1985 strains represent the Asian genotype II. Scale bar corresponds to 1% nucleotide sequence divergence.

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