Stephanie Sonnberg
, Phouvong Phommachanh, Tri Satya Putri Naipospos, Joanna
McKenzie, Chintana Chanthavisouk, Som Pathammavong, Daniel Darnell, Phetlamphone
Meeduangchanh, Adam M. Rubrum, Mahanakhone Souriya, Bounkhouang Khambounheuang,
Richard J. Webby, Bounlom Douangngeun, and Robert G. Webster
Author affiliations:
St. Jude Children’s Research Hospital, Memphis,
Tennessee, USA (S. Sonnberg, D. Darnell, A.M. Rubrum, R.J. Webby, R.G.
Webster); National Animal Health Centre,
Vientiane, Laos (P. Phommachanh, P. Meeduangchanh, B. Douangngeun); Food and Agriculture Organization of the United Nations, Rome,
Italy (T.S.P. Naipospos, J. McKenzie, C. Chanthavisouk, S. Pathammavong);
and; Ministry of Agriculture and Forestry,
Vientiane (M. Souriya, B. Khambounheuang)
Suggested citation for this article
Abstract
Avian influenza viruses (H5N1) of clades 2.3.4.1, 2.3.4.2, and 2.3.2.1 were
introduced into Laos in 2009–2010. To investigate these viruses, we conducted
active surveillance of poultry during March 2010. We detected viruses throughout
Laos, including several interclade reassortants and 2 subgroups of clade 2.3.4,
one of which caused an outbreak in May 2010.
Since 2003, highly pathogenic avian influenza virus (H5N1) has spread from
southern China throughout Southeast Asia and to Europe and Africa (
1,2). Since
2003, Laos has experienced outbreaks of clade 1 (2003), clade 2.3.4 (2006, 2007,
2008, 2009, 2010), and clade 2.3.2 viruses (twice in 2008) (
3,4). Active
surveillance of domestic ducks and chickens in Laos has been limited, but serum
antibodies against subtypes H5 and H9 have been detected in ducks. In addition,
subtype H5N1 virus was isolated from healthy ducks in 2006, and subtype H3N8
virus was detected in 2007 (
4,5). To explore the diversity, extent, and
endemicity of avian influenza viruses in Laos, we conducted a survey of healthy
domestic poultry throughout the country in March 2010.
No hay comentarios:
Publicar un comentario