Reemergence of Dengue in Southern Texas, 2013
Dana Thomas, Gilberto A. Santiago, Roman Abeyta, Steven Hinojosa, Brenda Torres-Velasquez, Jessica K. Adam, Nicole Evert, Elba Caraballo, Elizabeth Hunsperger, Jorge L. Muñoz-Jordán, Brian Smith, Alison Banicki, Kay M. Tomashek, Linda Gaul, and Tyler M. Sharp
Author affiliations: Centers for Disease Control and Prevention, San Juan, Puerto Rico (D.L. Thomas, G.A. Santiago, B. Torres-Velasquez, E. Caraballo, E. Hunsperger, J.L. Muñoz-Jordán, K.M. Tomashek, T.M. Sharp); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (D.L. Thomas, J.K. Adam); Cameron County Health Department, Harlingen, Texas, USA (R. Abeyta); Texas Department of State Health Services, Harlingen (R. Abeyta, B. Smith); Hidalgo County Health and Human Services, Edinburg, Texas, USA (S. Hinojosa); Division of Global Migration and Quarantine, San Diego, California, USA (J.K. Adam); Texas Department of State Health Services, Austin, Texas, USA (N. Evert, A. Banicki, L. Gaul)
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Figure 2
Figure 2. Phylogenetic tree of the 5 dengue virus type 1 isolates obtained from dengue case-patients in southern Texas, 2013. Maximum clade credibility tree inferred from 90 envelope glycoprotein gene sequences: 5 from Texas in 2013 (solid circles), and 85 from GenBank. BEAST version 1.8.2 (http://beast.bio.ed.ac.uk/) was used with strict molecular clock constant population size and 10 million Markov chain Monte Carlo iterations; effective sample size >200. Posterior probabilities >0.50 are shown in major nodes. All sequences shown belong to the American-African genotype. Other genotypes were not included to increase resolution of the Central American lineage. Black tapered lines indicate condensation of a monophyletic lineage with a single common ancestor. Scale bar indicates nucleotide substitutions per site. MX, Mexico.
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