Featured Research

from universities, journals, and other organizations

Flies May Spread Drug-resistant Bacteria From Poultry Operations

Date:
March 23, 2009
Source:
Johns Hopkins University Bloomberg School of Public Health
Summary:
Researchers found evidence that houseflies collected near broiler poultry operations may contribute to the dispersion of drug-resistant bacteria and thus increase the potential for human exposure to drug-resistant bacteria. The findings demonstrate another potential link between industrial food animal production and exposures to antibiotic resistant pathogens.

Chicken farm. Houseflies collected near broiler poultry operations may contribute to the dispersion of drug-resistant bacteria and thus increase the potential for human exposure to drug-resistant bacteria.
Credit: iStockphoto/Ryan Lane

Researchers at the Johns Hopkins Bloomberg School of Public Health found evidence that houseflies collected near broiler poultry operations may contribute to the dispersion of drug-resistant bacteria and thus increase the potential for human exposure to drug-resistant bacteria. The findings demonstrate another potential link between industrial food animal production and exposures to antibiotic resistant pathogens.

Related Articles


Previous studies have linked antibiotic use in poultry production to antibiotic resistant bacteria in farm workers, consumer poultry products and the environment surrounding confined poultry operations, as well as releases from poultry transport.

“Flies are well-known vectors of disease and have been implicated in the spread of various viral and bacterial infections affecting humans, including enteric fever, cholera, salmonellosis, campylobacteriosis and shigellosis,” said lead author Jay Graham, PhD, who conducted the study as a research fellow with Bloomberg School’s Center for a Livable Future. Our study found similarities in the antibiotic-resistant bacteria in both the flies and poultry litter we sampled. The evidence is another example of the risks associated with the inadequate treatment of animal wastes.”

“Although we did not directly quantify the contribution of flies to human exposure, our results suggest that flies in intensive production areas could efficiently spread resistant organisms over large distances,” said Ellen Silbergeld, PhD, senior author of the study and professor in the Bloomberg School of Public Health’s Department of Environmental Health Sciences.

Graham and his colleagues collected flies and samples of poultry litter from poultry houses along the Delmarva Peninsula—a coastal region shared by Maryland, Delaware and Virginia, which has one of the highest densities of broiler chickens per acre in the United States. The analysis by the research team isolated antibiotic-resistant enterococci and staphylococci bacteria from both flies and litter. The bacteria isolated from flies had very similar resistance characteristics and resistance genes to bacteria found in the poultry litter.

Flies have ready access to both stored poultry waste and to poultry houses. A study by researchers in Denmark estimated that as many as 30,000 flies could enter a poultry house over the course of six week period.

Additional authors of “Antibiotic-resistantenterococci and staphylococci isolated from flies collected near confined poultry feeding operations” are Lance Price, Sean Evans and Thaddeaus Graczyk. The study is published in the April 2009 issue of Science of the Total Environment.

The research was funded by a grant from the Johns Hopkins Center for a Livable Future.

According to Robert Lawrence, MD, director of the Center for a Livable Future, confined animal feeding operations—where thousands of animals are crowded together and are fed antibiotics for growth promotion—create the perfect environment for selection of bacteria that are resistant to antibiotics. “Antimicrobials are among the most important developments of the twentieth century in managing infectious diseases in people. We can’t afford to squander them by using them as growth promoters in industrial food animal production. The increase in antibiotic-resistant bacteria is a major threat to the health of the public, and policymakers should quickly phase out and ban the use of antimicrobials for non-therapeutic use in food animal production,” said Lawrence.


Story Source:

The above story is based on materials provided by Johns Hopkins University Bloomberg School of Public Health. Note: Materials may be edited for content and length.


Cite This Page:

Johns Hopkins University Bloomberg School of Public Health. "Flies May Spread Drug-resistant Bacteria From Poultry Operations." ScienceDaily. ScienceDaily, 23 March 2009. <www.sciencedaily.com/releases/2009/03/090316120846.htm>.
Johns Hopkins University Bloomberg School of Public Health. (2009, March 23). Flies May Spread Drug-resistant Bacteria From Poultry Operations. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2009/03/090316120846.htm
Johns Hopkins University Bloomberg School of Public Health. "Flies May Spread Drug-resistant Bacteria From Poultry Operations." ScienceDaily. www.sciencedaily.com/releases/2009/03/090316120846.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Classic Hollywood Memorabilia Goes Under the Hammer

Classic Hollywood Memorabilia Goes Under the Hammer

Reuters - Entertainment Video Online (Nov. 26, 2014) The iconic piano from "Casablanca" and the Cowardly Lion suit from "The Wizard of Oz" fetch millions at auction. Sara Hemrajani reports. Video provided by Reuters
Powered by NewsLook.com
Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Feast Your Eyes: Lamb Chop Sent Into Space from UK

Feast Your Eyes: Lamb Chop Sent Into Space from UK

Reuters - Light News Video Online (Nov. 25, 2014) Take a stab at this -- stunt video shows a lamb chop's journey from an east London restaurant over 30 kilometers into space. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins