Bird Flu Spreads Its Wings

Sam Ngan isn't worried about bird flu. In a Phnom Penh market stall encrusted with chicken excrement, the 30-year-old Cambodian sells live birds shipped fresh each morning from farms that border Vietnamese provinces that have been struck hard by the disease. But Ngan is confident her merchandise is safe. Her chickens "are exposed to the sunlight and can eat from the earth," she explains, "so the disease does not affect them." Besides, she adds, "only foreign chickens are affected, not the local ones."

When it comes to bird flu, what you don't know can hurt youand everyone else....