Halting the Bird Flu Outbreak in Cows May Require Thinking Beyond Milk The New York TimesWith the U.S. bird flu outbreak uncontained, scientists see growing risks NPRScientists Show How Bird Flu Spreads Between Mammals — As H5N1 Pandemic Fears Grow ForbesNew study confirms mammal-to-mammal avian flu spread Phys.orgHas the next pandemic already started? Al Jazeera English