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Antibiotics-resistant Gulls Worry Scientists

Date:
June 20, 2009
Source:
Uppsala University
Summary:
Antibiotic-resistant bacteria are spreading to and throughout the environment. The resistance pattern for antibiotics in gulls is the same as in humans, and a new study shows that nearly half of Mediterranean gulls in southern France have some form of resistance to antibiotics.

Nearly half of Mediterranean gulls in southern France have some form of resistance to antibiotics.
Credit: iStockphoto/Ertun Duman

The resistance pattern for antibiotics in gulls is the same as in humans, and a new study by Uppsala University researchers shows that nearly half of Mediterranean gulls in southern France have some form of resistance to antibiotics. The study is being published June 18 in the journal PLoS One.

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Bacteria that develop resistance to antibiotics are one of society’s greatest future threats and are having a major impact on our ability to use various medical treatments. The spread of resistance is no longer a local problem in hospitals; antibiotic-resistant bacteria are also spreading to and throughout the environment.

The research team at the Uppsala University Department of Medical Pathology has studied the occurrence of antibiotics-resistant bacteria in Mediterranean gulls in southern France.

“Gulls have developed behaviors that entail closer and closer contact with us, and opportunities arise for the exchange of bacteria. This is why they are extremely interesting to study,” says Mirva Drobni, who directed the study.

The findings of the study show that nearly half of the birds carry some form of resistance to antibiotics, and a tenth of them carry ESBL-producing bacteria. These bacteria have the capacity to break down some of our most powerful and important antibiotics and furthermore have an ability to spread extremely rapidly. The researchers were able to show that the resistance pattern was the same among gulls and humans, which indicates that human- and bird-borne bacteria and their resistance mechanisms are being mutually exchanged.

“These findings are worrisome as they also indicate a higher degree of resistance in bacteria from gulls than we see in humans in the same region. At present we don’t know whether they constitute merely a reservoir for antibiotics resistance or whether they are moreover a source of further dissemination to humans,” says Mirva Drobni.


Story Source:

The above story is based on materials provided by Uppsala University. Note: Materials may be edited for content and length.


Journal Reference:

  1. Bonnedahl et al. Dissemination of Escherichia coli with CTX-M Type ESBL between Humans and Yellow-Legged Gulls in the South of France. PLoS ONE, 2009; 4 (6): e5958 DOI: 10.1371/journal.pone.0005958

Cite This Page:

Uppsala University. "Antibiotics-resistant Gulls Worry Scientists." ScienceDaily. ScienceDaily, 20 June 2009. <www.sciencedaily.com/releases/2009/06/090618093242.htm>.
Uppsala University. (2009, June 20). Antibiotics-resistant Gulls Worry Scientists. ScienceDaily. Retrieved November 22, 2014 from www.sciencedaily.com/releases/2009/06/090618093242.htm
Uppsala University. "Antibiotics-resistant Gulls Worry Scientists." ScienceDaily. www.sciencedaily.com/releases/2009/06/090618093242.htm (accessed November 22, 2014).

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