Resistant bacteria in food-producing animals are of particular concern.
Center for Desease Control and Prevention: Antibiotic Use in Food-Producing Animals
Antimicrobial use in animals can contribute to the emergence of antimicrobial resistance in bacteria that may be transferred to humans, thereby reducing the effectiveness of antimicrobial drugs for treating human disease.
U.S. Food and Drug Administration: Antimicrobial Use
The inappropriate use of antimicrobial drugs, including in animal husbandry, favours the emergence and selection of resistant strains, and poor infection prevention and control practices contribute to further emergence and spread of antimicrobial resistance.
World Health Organization: Antimicrobial Resistance
Simply stated, there is concern that bacteria that cause disease in both people and animals are developing more resistance to the antibiotics used for treatment.
United States Department of Agriculture: Antimicrobial Resistance Action Plan
Antibiotic resistance is a global health problem that requires international attention and collaboration, because bacteria do not recognize borders.
United States Department of Agriculture: Antimicrobial Resistance Action Plan
The most urgent need is to minimize the overuse of antibiotics in medicine and agriculture, which accelerates the development of resistant strains.
The New York Times: The Rise of Antibiotic Resistance