Swine Flu Ancestor Born on U.S. Factory Farms | Wired Science

Scientists have traced the genetic lineage of the new H1N1 swine flu to a strain that emerged in 1998 in U.S. factory farms, where it spread and mutated at an alarming rate. Experts warned then that a pocket of the virus would someday evolve to infect humans, perhaps setting off a global pandemic.The new findings challenge recent protests by pork industry leaders and U.S., Mexican and United Nations agriculture officials that industrial farms shouldn’t be implicated in the new swine flu, which has killed 176 people and on Thursday was formally declared a pandemic by the World Health Organization.

Swine Flu Ancestor Born on U.S. Factory Farms | Wired Science