Journal
AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE
Volume 83, Issue 3, Pages 672-678Publisher
AMER SOC TROP MED & HYGIENE
DOI: 10.4269/ajtmh.2010.09-0766
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Funding
- Comas Memorial Foundation of Tropical and Preventive Medicine
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During the past two decades. Dengue virus-3 (DENV-3) has re-emerged in the Western Hemisphere causing significant epidemics of dengue fever (DF) and dengue hemorrhagic fever (DHF) In an effort to understand the molecular evolution of DENV-3 and their relationships to other DENV-3 circulating in the western hemisphere. we conducted a phylogenetic study on DENV-3 isolates made between 2002 and 2007 in the metropolitan area of Medellin. Colombia An unexpected co-circulation of two different variants of DENV-3 subtype III during at least 5 years in Medellin was found In addition, a more complete analysis of DENV-3 viruses isolated in other South American regions revealed the existence of three different subtype III lineages, all derived from independent introductions This study documents significant genetic diversity of circulating viruses within the same subtype and an unusual capacity of the population of this city to support continuous circulation of multiple variants of dengue virus.
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