A pig pokes his snout through the rails of its holding pen Aug. 19 in Gaithersburg, MD. The United States needs to lead a global effort to protect people from new outbreaks of deadly infectious diseases that originate in animals, such as swine flu, AIDS and SARS, health experts said Tuesday. Photograph by: Tim Sloan, AFP WASHINGTON - The United States needs to lead a global effort to protect people from new outbreaks of deadly infectious diseases that originate in animals, such as swine flu,...
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