http://www.rockymountainnews.com/drmn/opinion/article/0,1299,DRMN_38_3964804,00.html
QUOTE:" Garrett notes that H5N1 has rapidly mutated, jumping recently to infect pigs. In fact, the scientific evidence points to the potential that it will soon mutate into a human-pandemic form. Which is why she concludes that, "Those responsible for foreign policy and national security, the world over, cannot afford to ignore the warning."
The jump to pigs is, if I have my facts correct, the last jump before efficient human-to-human transmission.