Consumers Union has released its third annual “Chain Reaction” report on the prevalence of antibiotics in meat products in America’s most popular chain restaurants. Sadly, the results show most of the restaurants have failed to improve, even in the face of drug-resistant superbugs. The rankings are based on each companies’ own policies for the use of antibiotic in meat and poultry products that they buy. Pumping chickens, cows and pigs full of antibiotics intended for humans is slowly destroying our ability to treat common infections. The U.N. has called it a growing concern and potential global health crisis. More than 23,000 people die annually in the U.S. from antibiotic-resistant infections each year, according the the CDC. To combat this problem, doctors and hospitals use antibiotics more judiciously than in the past, yet 70 percent of all antibiotics sold in the U.S. aren’t intended for human use anyway, but rather in animal agriculture. “The nation’s fast food restaurant chains are…