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. 2008 Jun;14(6):958-61.
doi: 10.3201/eid1406.080056.

Avian influenza A virus (H5N1) outbreaks, Kuwait, 2007

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Avian influenza A virus (H5N1) outbreaks, Kuwait, 2007

Ahmad Al-Azemi et al. Emerg Infect Dis. 2008 Jun.

Abstract

Phylogenetic analysis of influenza A viruses (H5N1) isolated from Kuwait in 2007 show that (H5N1) sublineage clade 2.2 viruses continue to spread across Europe, Africa, and the Middle East. Virus isolates were most closely related to isolates from central Asia and were likely vectored by migratory birds.

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Figures

Figure 1
Figure 1
A) Kuwait, with location of subtype H5N1 virus outbreaks in 2007. Circles indicate location of farms with confirmed influenza (H5N1) infections in poultry; square indicates the Al Sulaibiya area where virus isolation was conducted. B) Eurasia, with location of subtype H5N1 isolates phylogenetically related to Kuwait isolates.
Figure 2
Figure 2
Phylogenetic relationships of the hemagglutinin (HA) gene of influenza virus (H5N1) isolates from Kuwait in 2007. Numbers at nodes indicate neighbor-joining bootstraps >60, and Bayesian posterior probabilities >95% are indicated by thickened branches. Analyses were conducted with nucleotide positions 1–963 of the HA gene. The HA tree was rooted to Gs/Guangdong/1/1996. Labels to the right of the tree refer to World Health Organization (H5N1) clade designations (14). Ck, chicken; Dk, duck; Gs, goose, MDk, migratory duck; Qa, quail; Ty, turkey.

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