Study: New flu inefficient in attacking people

WASHINGTON -With swine flu continuing to spread around the world, researchers say they have found the reason it is — so far — more a series of local blazes than a wide-raging wildfire. The new virus, H1N1, has a protein on its surface that is not very efficient at binding with receptors in people's respiratory tracts, researchers at the Harvard-MIT Division of Health Sciences and Technology report in Friday's edition of the journal Science.