Earlier this year, a massive epidemic of avian flu hit eight Asian countries, killing at least 23 people and leading to the death or culling of more than 100 million chickens and that could be just the prelude. Last week China , Thailand and Vietnam all announced that they had chickens infected with the virulent H5N1 virus that causes avian flu, dashing hopes that the widespread bird culls had eradicated it. Officials in China quickly barred the export of poultry from the affected Anhui province and culled 30,000 birds within a three-kilometer radius of the...
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