* Health and Medical News:Bird Flu's Rapid Spread Has Experts Flummoxed

Federal agriculture officials are looking everywhere they can think of for H5N2 bird flu, which has killed more than 39 million birds.









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via Health and Medical NewsHealth and Medical News Pfizer Inc has already had its takeover overtures rebuffed three times by rival AstraZeneca Plc, but investors in the U.S. drugmaker say it can tolerate a little more rejection before going hostile with the deal. AstraZeneca turned down a sweeten...