Figure. Maximum clade credibility tree of complete envelope genes of dengue virus type 1 (DENV-1) isolates. Horizontal branches are drawn to a scale of estimated year of divergence. Coalescent times with 95% highest posterior density values (ranges in parentheses) and posterior probability values (all 1.0) of key nodes are shown. Patient convalescent-phase serum samples used for neutralization assays from which virus was isolated are indicated at the end of branches according to their virus groups. Box indicates sylvatic DENV-1 isolated in the study. New sequences were used to create the phylogenetic tree are as in Table 1. SII, subgenotype II, SI, subgenotype I.
The opinions expressed by authors contributing to this journal do not necessarily reflect the opinions of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.