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. 2006 Oct;12(10):1593-5.
doi: 10.3201/eid1210.060658.

H5N1 influenza viruses in Lao People's Democratic Republic

David A Boltz  1 , Bounlom Douangngeun, Settha Sinthasak, Phouvong Phommachanh, Scott Rolston, Honglin Chen, Yi Guan, Joseph S Malik Peiris, J Gavin J D Smith, Robert G Webster
Affiliations

H5N1 influenza viruses in Lao People's Democratic Republic

David A Boltz et al. Emerg Infect Dis. 2006 Oct.

Abstract

A prospective surveillance program for influenza viruses was established in Lao People's Democratic Republic (PDR) in July of 2005. We report isolation of H5N1 virus genetically distinct from H5N1 circulating in 2004, which indicates reintroduction of H5N1 into Lao PDR after its disappearance (i.e., no virologic or serologic evidence) for 2 years.

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Figures

Figure 1
Figure 1
Map of Lao People's Democratic Republic indicates regions (black areas) of influenza virus surveillance. Outbreaks of H5N1 occurred in Vientiane (location of isolation of A/Duck/Laos/3295/2006) (A), Savannakhét (B), and Champasak (C) provinces during late 2003 and early 2004.
Figure 2
Figure 2
Phylogenetic relationship of the hemagglutinin (HA) gene of representative H5N1 influenza virus strains isolated in Southeast Asia from 2003 through 2006. Analysis was based on nucleotides 1–1012 (1,012 bp) of the HA gene. Viruses isolated in Lao People's Democratic Republic in 2004 and 2006 are underlined. The strain isolated from ducks in Vientiane in February 2006 is shaded.
See this image and copyright information in PMC

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