The US Food and Drug Administration (FDA) issues warnings to dairy farms in three states for excessive use of animal antibiotics, with residue levels that could be harmful to human health as well as increasing the risk of more widespread antibiotic-resistant infection.

http://www.foodsafetynews.com/2011/04/animal-antibiotic-drug-abuse-at-dairies-in-three-states/
http://www.premierfoodsafety.com/news/foodsafetyheadlines