Avian Flu Hatches Again

Earlier this year, a massive epidemic of avian flu hit eight Asian countries, killed at least 23 people and led 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 bird culls earlier this year had eradicated it. Officials in China appear to have responded quickly, barring the export of poultry from the affected Anhui province and culling 30,000 birds within a three-kilometer radius of the original infection....