Consumers Union antibiotic resistant bacteria concerned consumer Consumers Union Consumers Union concluded American activist voices expanded produce meat faster Consumers Union Consumers Union Consumer Reports 80 percent of antibiotics sold in the United States meat sources Consumers Union Consumers Union breed antibiotic-resistant superbugs our food supply concluded Consumers Union antibiotic use in livestock overuse of antibiotics on farms breed antibiotic-resistant superbugs threat to public health automatically be resistant to promote growth or prevent disease http://consumersunion.org/news/the-overuse-of-anti... Consumers Union produce meat faster sub-therapeutic levels of antibiotics in livestock feed our food supply chronic antibiotic overuse our food supply public health concern.