For decades, researchers have been doggedly pursuing a universal flu vaccine--one that would protect against the evolving influenza virus for years rather than just a single season--with little success. The bug mutates so quickly that a new vaccine must be specially formulated each year. But a relatively new strategy, targeting a rarely seen portion of the virus, is now showing some success.
A Long-lasting Universal Flu Vaccine
Mon, 10/18/2010 - 9:34pm