Molecular characterization and phylogenetic analysis of dengue viruses imported into Taiwan during 2008-2010.
We present our surveillance results on imported dengue cases in Taiwan during 2008-2010. A total of 734 imported dengue patients were identified. The travelers were arriving from 18 countries, including Southeast Asia, the Indian subcontinent, South Pacific islands, and Latin America. Gene sequences from 358 dengue virus (DENV) isolates were used to perform phylogenetic analyses, thus, providing an updated view of the geographic distribution and dynamic transmission of DENV strains circulating in these countries. Our results suggest that the DENV-1 genotype I and DENV-2 Cosmopolitan genotype comprise the predominant DENV strains circulating in Southeast Asian countries. The DENV-3 Genotype III strain was found to be newly emerging in several Southeast Asian countries, however, the Asian genotype 2 and the Asian/American genotype of DENV-2 strains appeared to be less prevalent in Southeast Asia. Furthermore, imported dengue viruses are representative of the overall patterns of serotype/genotype frequencies of dengue outbreaks that occurred in Taiwan.
Research and Diagnostic Center, Centers for Disease Control, Department of Health, Taipei, Taiwan, Republic of China.
SourceThe American journal of tropical medicine and hygiene 87:2 2012 Aug pg 349-58
Molecular Sequence Data
Real-Time Polymerase Chain Reaction
Sequence Analysis, DNA
Pub Type(s)Journal Article
Research Support, Non-U.S. Gov't