WEDNESDAY, Jan. 4 (HealthDay News) -- Worried about the growing threat of antibiotic-resistant microbes in humans, the U.S. Food and Drug Administration on Wednesday curbed the use of certain antibiotics in cattle, pigs and poultry.
Widespread use of antibiotics in food-producing animals is thought to be a major source of antibiotic-resistant strains of bacteria, experts say.
The new ban includes antibiotics known as cephalosporins, and would take effect April 5, the FDA said in a statement.
The proposed rules, which apply to cattle, swine, chickens and turkeys, are intended to reduce the risk of cephalosporin resistance in certain types of bacteria so that the drugs remain effective in treating disease in humans.
The agency's move "will help to prevent the development of bacterial resistance to this class of drugs," said one expert, Dr. Pascal James Imperato, dean of the SUNY Downstate School of Public Health in New York City.
Another specialist in infectious disease agreed.
"If you use them, you lose them. Antibiotics that is," said Dr. Bruce Hirsch, an attending physician in infectious diseases at North Shore University Hospital in Manhasset, N.Y. "Bacteria are capable of reproducing every 20 to 30 minutes. Antibiotics -- particularly in the low doses used in animals -- exert a selection pressure [on bacteria] which results in antibiotic resistance."
Cephalosporins are used in humans to treat pneumonia, skin and soft tissue infections, pelvic inflammatory disease, diabetic foot infections and urinary tract infections.
If the drugs lose their effectiveness to treat these conditions, doctors may have to use less effective drugs or ones with greater side effects, the FDA explained.
"We believe this [move] is an imperative step in preserving the effectiveness of this class of important antimicrobials that takes into account the need to protect the health of both humans and animals," M
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