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New Study Sheds New Light On Pig Farms And MRSA Bacteria Transmission

AlaskaDenise

In Memoriam
.....compel the U.S. Food and Drug Administration (FDA) to study whether the use of human antibiotics in animal agriculture is contributing to the reported surge in MRSA infections and deaths.....
Perhaps they should also study whether putting tamiflu in the drinking water of factory chickens does likewise.

.
 
Re: New Study Sheds New Light On Pig Farms And MRSA Bacteria Transmission

Is the presumed linkage between higher prevalence in pigs leading to higher incidence in pig farmers supported by the human studies? In the AMA study, were the industry and occupations of the victims analyzed?

Are pig farmers the new "canaries in the coal mine" ?

J.
 
Re: New Study Sheds New Light On Pig Farms And MRSA Bacteria Transmission

Perhaps anyone who regularly comes into contact with animals that can act as a "mixing vessel" for human pathogens should be monitored or at least educated on optimal biosecurity. Examples: pigs, quails, mink, etc.

.
 
Re: New Study Sheds New Light On Pig Farms And MRSA Bacteria Transmission

The widespread use of antibiotics in pigs is wellknown. Resulting in this MRSA trouble. May be relevant from my country, from some time ago:

Pigs to humans: alert over new MRSA strain

? Half of all Dutch farmers now carry superbug

? Urgent call to screen UK lifestock and test imports

Ian Sample Science correspondent
Monday June 25, 2007

The Guardian

Campaigners today call for urgent tests on the UK's farm animals after the emergence of a new strain of MRSA which has spread rapidly among farmers in Europe, causing an array of serious infections.

The drug-resistant bug is thought to have arisen in pigs fed antibiotics to protect them against farm-borne diseases and boost their growth. The emergence of the new strain backs up fears voiced by some experts that the heavy use of antibiotics in farm animals could lead to a drug-resistant bug capable of infecting humans.

The strain of staphylococcus aureus, known as ST398, is resistant to commonly used antibiotics and has caused skin infections and rare heart and bone infections in patients in the Netherlands, Denmark, Belgium and Germany.
A report published today by the organic farming organisation, the Soil Association, says the superbug represents a new threat to human health.

It urged the government to introduce immediate screening of national livestock and strict testing of imported meat products and animals from affected regions, to prevent the superbug spreading to Britain.

The report reveals the swift spread of the new MRSA strain, which tested positive in 39% of pigs at nine abattoirs in the Netherlands last year. A further survey identified the strain in 13% of Dutch calves.

Medical officials found that 50% of Dutch farmers were carriers of the strain, a prevalence 1,500 times higher than the rest of the population. In one pig farming region 80% of all MRSA cases are now caused by the farm animal strain.

A survey by the Dutch food and consumer product safety authority last year found traces of the bug in 20% of pork meat, 21% of chicken meat and 3% of beef.

"It's going to get to the UK sooner or later, but the government is doing nothing to look for it," said Richard Young, a co-author of the report. "We should be doing routine surveillance on imported meat and imported live chicks."

The document also recommends a screening programme for farmers coming from European countries before they work with live animals.

"It's a new strain we should be looking for here," said Mark Enright, an expert in MRSA at Imperial College, London. "The excessive use of antibiotics is always a bad idea. If you do that for long enough, inevitably one of the strains that emerges will be good at causing disease in humans."

The new strain was first detected two years ago in the Netherlands.

A Defra spokesman said the government had commissioned research into the spread of the infection among animals. "There is no consensus on whether animals became infected from other animals or humans, therefore the identification of MRSA in animals cannot be conclusively linked to the use of antibiotics in animals."

http://www.guardian.co.uk/country/article/0,,2110603,00.html


More: http://www.cdc.gov/eid/content/13/11/1753.htm
 
Re: New Study Sheds New Light On Pig Farms And MRSA Bacteria Transmission

:: Home > Archives : Eurosurveillance monthly releases 2000 > Volume 5 / Issue 3 [ previous page ]

Surveillance report

Dutch measures to control MRSA and the expanding European Union


volume 5 issue 3 publication date March 2000 page 26-28 PDF


JHT Wagenvoort
Department of Medical Microbiology, Regional Public Health Laboratory, Heerlen, The Netherlands



The Dutch national policy for the prevention of spread of methicillin resistant Staphylococcus aureus (MRSA) has shown that it is possible to suppress and prevent MRSA from becoming endemic in hospitals.

Implementation of effective measures against MRSA will also help prevent the spread of other infections in hospitals.

The problem of MRSA would benefit from a common European Union policy.

-snip -

Methods

How have Dutch hospitals brought MRSA under control? Over ten years ago the Working Party for Infection Prevention produced guidelines for the containment of MRSA (4), which have been endorsed by the Health Inspectorate. The mainstay of the guidelines is a ‘search and destroy’ strategy.

- All patients with MRSA are isolated in private rooms.

- Patients from foreign hospitals and suspected MRSA carriers (including pig farmers,ed) are screened and isolated.

- Contact patients and also health care workers are screened.

- MRSA positive contacts are treated with body washings with either 4% chlorhexidine liquid soap or 7.5% polividone–iodine shampoo and mupirocin nose ointment, which may lower the bacterial load and therewith the degree of spread. (Healthy people who are usually MRSA positive, presumably most health care workers, are usually decontaminated with such treatment applied for five days.)

- Small numbers of MRSA can be identified by taking samples twice within 24 hours of nose, throat, sputum, perineum, urine, skin lesions, and wounds, and culturing using enrichment broth (5).

- The movement of MRSA carriers between hospitals generates a warning.

The policy is for such patients to be readmitted to the same hospital as far as possible. The efforts of infection control practitioners and clinical microbiologists are vital.

- snip -

Another backbone in the prevention of resistant bacteria is the implementation of a strict antibiotic policy in Dutch hospitals. This is steered by local committees and many hospitals produce their own formularies with lists of ‘first choice’ compounds and their indications for use.

Rates of resistance of clinically important bacteria are low (8) and older antibiotics continue to be first line drugs in the treatment of serious infections, including those on intensive care units.

more:

http://www.eurosurveillance.org/em/v05n03/0503-222.asp
 
Re: New Study Sheds New Light On Pig Farms And MRSA Bacteria Transmission

Which domestic animal protein has the lowests level of MRSA, BF, Salmonella, mercury, etc. etc.?

.
 
Re: New Study Sheds New Light On Pig Farms And MRSA Bacteria Transmission

I apologize for my ignorance and laziness in researching.

But what does "Medical officials found that 50% of Dutch farmers were carriers of the strain.." really mean, in practical terms?

In other words, will these people always be carriers of MRSA?

Are there symptoms associated with being a carrier?

Can "carrier" status change with treatment?

Have workers compensation claims or workplace insurance claims been filed by these carriers?

If one is a carrier of MRSA, how easy is it to become infected by MRSA through some direct or indirect (fomite) contact with him/her?

Is there evidence or current investigation into slaughterhouse workers with MRSA?

J.
 
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