After a lethal bird flu virus emerged in Asia, U.S. officials launched an intense effort to build new defenses against a pandemic, including replacing an antiquated vaccine system, which depends on millions of chicken eggs.
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U.S. slow to build new flu defensesCourtesy washingtonpost.com - Health Mon, 11/23/2009 - 13:22
After a lethal bird flu virus emerged in Asia, U.S. officials launched an intense effort to build new defenses against a pandemic, including replacing an antiquated vaccine system, which depends on millions of chicken eggs. More related itemsChina suspects bus driver infected with bird flu
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