Enzootic transmission of yellow fever virus in Peru

Juliet Bryant, Heiman Wang, Cesar Cabezas, Gladys Ramirez, Douglas Watts, Kevin Russell, Alan D.T. Barrett

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

The prevailing paradigm of yellow fever virus (YFV) ecology in South America is that of wandering epizootics. The virus is believed to move from place to place in epizootic waves involving monkeys and mosquitoes, rather than persistently circulating within particular locales. After a large outbreak of YFV illness in Peru in 1995, we used phylogenetic analyses of virus isolates to reexamine the hypothesis of virus movement. We sequenced a 670-nucleotide fragment of the prM/E gene region from 25 Peruvian YFV samples collected from 1977 to 1999, and delineated six clades representing the states (Departments) of Puno, Pasco, Junin, Ayacucho, San Martin/Huanuco, and Cusco. The concurrent appearance of at least four variants during the 1995 epidemic and the genetic stability of separate virus lineages over time indicate that Peruvian YFV is locally maintained and circulates continuously in discrete foci of enzootic transmission.
Original languageAmerican English
Pages (from-to)926-933
Number of pages8
JournalEmerging Infectious Diseases
DOIs
StatePublished - 1 Aug 2003
Externally publishedYes

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    Bryant, J., Wang, H., Cabezas, C., Ramirez, G., Watts, D., Russell, K., & Barrett, A. D. T. (2003). Enzootic transmission of yellow fever virus in Peru. Emerging Infectious Diseases, 926-933. https://doi.org/10.3201/eid0908.030075