"U.S. sales of medically important antibiotics approved for use in livestock rose by 23 percent between 2009 and 2014, federal regulators said on Thursday, fueling concerns about risks to humans from antibiotic-resistant bacteria.

Last year, domestic sales and distribution of such drugs increased by 3 percent, according to the U.S. Food and Drug Administration.

Public health advocates, along with some lawmakers and scientists, have criticized the long-standing practice of using antibiotics in livestock, arguing that it is fueling the rise of antibiotic-resistant bacteria. Agribusinesses defend the practice as necessary to help keep cattle, pigs and chickens healthy and to increase production of meat for U.S. consumers."

Tom Polansek reports for Reuters December 10, 2015. [2]