Antibiotic-Free Meat Business Is Booming, Thanks To Chipotle : The Salt : NPR

Antibiotic-free food went mainstream after Chipotle’s founder advertised free-range pork on the menu. Now many big players in food service are getting into the act, creating a few supply chain hiccups.

http://www.npr.org/blogs/thesalt/2012/05/31/154084442/antibiotic-free-meat-business-is-booming-thanks-to-chipotle