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Scientists meeting in Bangkok say bird flu continues to spread in several Asian and African countries. The United Nations senior coordinator for avian and human influenza told reporters Wednesday that progress has been made but problems still remain.
David Nabarro said problem countries in Asia include Bangladesh, Indonesia and Vietnam. In Africa, he said Egypt and Nigeria give cause for concern. Nabarro said Thailand has had greater success in controlling the H5N1 virus.
The H5N1 strain of avian influenza mainly affects birds and has struck primarily in Asia, but it has also appeared in Europe and Africa. Since its appearance in Hong Kong in 1997, the H5N1 virus has killed at least 211 people in eleven countries.
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