High genetic divergence and recombination in Arenaviruses from the Americas

Angela M. Archer, Rebeca Rico-Hesse

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

The rodent-borne Arenaviruses are divided into two major antigenic groups: the Old World and New World complexes. Of the 15 known New World arenaviruses, four (Junin, Machupo, Sabia, and Guanarito) have been associated with hemorrhagic fever in humans. It has been difficult to assess the pathogenic or epidemic potential of the remaining viruses and the threat of emerging disease. We obtained full-length small (S) segment sequence data, encoding the nucleoprotein (NP) and glycoprotein precursor (GPC), from all American arenaviruses to predict their evolutionary and functional relationships. Phylogenetic analysis of NP or GPC amino acid sequences from all New World arenaviruses revealed three lineages and that Tamiami and Whitewater Arroyo viruses were probably derived from a single recombinant progenitor. The results imply that arenaviruses have been evolving independently for a very long time, leading to very diverse groupings that do not correlate with geography, rodent host, or human epidemic potential.

Original languageEnglish (US)
Pages (from-to)274-281
Number of pages8
JournalVirology
Volume304
Issue number2
DOIs
StatePublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Virology

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