Because of the virus subtype, it is less likely that avian flu would become transmissible from person to person, but still possible, said Dr. William Short at the division of infectious diseases at Thomas Jefferson University Hospital in Philadelphia, Pennsylvania.

CNN: CDC confirms 7 cases of swine flu in humans

But now, two separate groups one led by David Cosgrove at Hammersmith Hospital in London, the other by Barry Goldberg at Thomas Jefferson University in Philadelphia are trying to turn the new bubbles into a reliable method of diagnosing cancer.

ECONOMIST: The ne plus ultra of medicine