WEDNESDAY, Feb. 15 (HealthDay News) -- Scientists have long
believed that urinary tract infections are typically caused by a
person's own E. coli bacteria, but a new Canadian study suggests
the bacteria may more often than not come from chickens.
As many as 85 percent of urinary tract infections are caused by
E. coli, according to the report in the March issue of
Emerging Infectious Diseases, a publication of the U.S. Centers for Disease Control and Prevention.
Researchers compared the genetic fingerprints of E. coli from
these infections to that of E. coli from chicken, beef and pork.
And they found a match: chicken. What's more, they report that the
infections probably came directly from the chickens, not from human
contamination during food processing.
"Chicken may be a reservoir for the E. coli that cause infections like urinary tract infections," said study author Amee Manges, who is with the department of epidemiology, biostatistics and occupational health at McGill University in Montreal.
"We are also concerned about the selection and amplification of drug-resistant E. coli on the farms because of improper or overuse of antimicrobials during food animal production. It may be possible to reduce the level of drug-resistant infections in humans by encouraging rational and judicious use of antimicrobials on farms," Manges said.
"We just want to emphasize that it isn't just inappropriate use of antibiotics in human medicine that matters, but also the use of antibiotics in veterinary medicine and food production that leads to greater drug-resistant bugs," the study author added.
The U.S. Food and Drug Administration already advises against
the overuse of antibiotics in livestock, because it can lead to
resistant strains of bacteria.
Dr. Philip Tierno, director of clinical microbiology and
immunology at NYU Langone Medical Center in New York City, said it
is not surprising that the food supply, especially chicken, may
play a role in causing urinary tract and other infections. He said
the best protection begins with proper hygiene.
"If you practice good personal hygiene, good food hygiene and good home hygiene, we can reduce the number of infections," he suggested. Proper hand washing should last for 20 seconds. "Wash in between your [fingers] and under your nails," Tierno said. "When dealing with counter surfaces, use a product that can disinfect surfaces and prevent cross-contamination."
Cooking also helps kill disease-causing bugs. "Eat nothing raw.
Cook it well, and if you are eating vegetables, make sure to soak
them and wash them well," he said.
The solution is definitely not to throw more antibiotics at
livestock, Tierno agreed. As far as preventing E. coli in chicken
coops, "we need a better system developed to raise chickens so they
are not raised in crowded conditions and prone to diseases like E.
coli," he explained.
Good hygiene is never a bad idea, but the truth is that E. coli
is everywhere, said Dr. Elizabeth Kavaler, a urologist at Lenox
Hill Hospital in New York City. "The best defense against urinary
tract infections is to exercise, eat well and get proper sleep so
your immune system is strong and can fend off what you can't see,
including E. coli," she said. "Be healthy, wash your hands, take
care of yourself and when you have a urinary tract infection, see
your doctor for an antibiotic to treat it."
Learn more about food safety at the
U.S. Department of Agriculture.
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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