Maryn McKenna

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News: FDA Won't Act Against Ag Antibiotic Use

December 23, 2011 By Maryn Leave a Comment

With no notice other than a holiday-eve posting in the Federal Register, the US Food and Drug Administration has reneged on its long-stated intention to compel large-scale agriculture to curb over-use of agricultural antibiotics, which it had planned to do by reversing its approval for putting penicillin and tetracyclines in feed.

How long-stated? The FDA first announced its intention to withdraw those approvals in 1977.

From the official posting:

The Food and Drug Administration (FDA or the Agency) is withdrawing two 1977 notices of opportunity for a hearing (NOOH), which proposed to withdraw certain approved uses of penicillin and tetracyclines intended for use in feeds for food-producing animals based in part on microbial food safety concerns.1 … (1FDA’s approval to withdraw the approved uses of the drugs was based on three statutory grounds: (1) The drugs are not shown to be safe (21 U.S.C. 360b(e)(1)(B)); (2) lack of substantial evidence of effectiveness (21 U.S.C. 360b(e)(1)(C)); and (3) failure to submit required reports (21 U.S.C. 360b(e)(2)(A)).)

There is a lot of background to this, but here is the takeaway: For 34 years, the FDA has been contending that administering small doses of antibiotics to healthy animals is an inappropriate use of increasingly scarce drugs — a position in which it is supported by organizations as mainstream as the American Medical Association. With this withdrawal, it backs away from the actions it took to support that assertion — which may indicate there will be no further government action on the issue until after the 2012 election.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, animals, antibiotics, FDA, food, food policy, growth promoters, Resistance, Science Blogs

Breaking: Panel Says To Cease Most Chimp Research

December 15, 2011 By Maryn Leave a Comment

There’s huge news today in biomedical research — a little outside my core topics, but so important that I thought it was worth highlighting for you anyway.

A report by the Institute of Medicine has declared that most research on chimps in the United States is unnecessary and should cease. Experiments should only continue if strict criteria are met:

  • If there is no other model or animal in which the research can be performed
  • If the research cannot be performed ethically on humans
  • If not using chimps will “prevent or significantly hinder advances necessary to prevent or treat life-threatening or debilitating conditions.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: animals, anthropology, Biology, NIH, primates, Science Blogs

More MRSA Found In U.S. Retail Meat (Turkey, Too)

November 22, 2011 By Maryn Leave a Comment

There are two new studies out that confirm, once again, that drug-resistant staph or MRSA — normally thought of as a problem in hospitals and out in everyday life, in schoolkids, sports teams, jails and gyms — is showing up in animals and in the meat those animals become.

The strain of staph that shows up in farm animals, known as “livestock-associated” MRSA or MRSA ST398, first emerged in pigs in the Netherlands, and has been widely identified in retail meat in Europe. (You can find a long archive of posts on ST398 here, and more here.) But that same strain has been difficult to identify in the United States. That may be due in part to the U.S. having a uniquely massive epidemic of community-associated MRSA, far larger than in any other country, which likely both obscures any animal epidemic from detection, and possibly also fills the ecological niche that livestock-associated staph might otherwise occupy. But, it must be said, there’s also remarkably little political will to look for livestock-associated MRSA (though the U.S. Department of Agriculture has now funded a study).

Nevertheless, individual investigators keep trying, and when they look for the pathogen, they find it, such as in these studies from May and this one from April. Now, two other teams have as well.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, animals, antibiotics, FDA, food, food policy, MRSA, Resistance, Science Blogs, ST398, USDA

Is China Banning Growth Promoters And Do They Mean It?

October 7, 2011 By Maryn Leave a Comment

A tantalizing prospect surfaced yesterday. The Institute for Agriculture and Trade Policy in Minneapolis tweeted a link to a Sept. 13 story from an online agricultural trade journal that said, in its entirety:

China’s Ministry of Agriculture has announced a forthcoming ban on antibiotics as growth promoters in animal feed. The ban is supported by the academic community, which believes that without antibiotics in animal feed, the health of animals will be better promoted, microbes’ resistance to antibiotics will be lowered and food will become safer to eat. Recent statistics show that in 2006 China produced 210,000 tons of antibiotics, and 97,000 tons were added to animal feed. Today it is estimated that 400,000 tons are produced annually.

So, first: If this story is accurate, it would be huge news. But, second: The story lists no sources and is almost a month old; in that month, there has been no other major coverage of this decision that I can find — which means a responsible reporter (which I try to be) needs to do some digging rather than pushing the link along.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: animals, antibiotics, China, food, food policy, food safety, growth promoters, Resistance, Science Blogs

Drug Resistance in Food — Coming From Aquaculture?

August 12, 2011 By Maryn Leave a Comment

In the midst of the giant Salmonella Heidelberg outbreak last week — now up to 107 cases in 31 states, and triggering a recall of 36 million pounds of ground turkey — it was easy to miss that a second and even more troubling strain of resistant Salmonella is on the move. As I wrote last week, that strain is called Salmonella Kentucky ST198, it is much more drug-resistant than the U.S. Heidelberg outbreak, and it has been spreading since 2002 from Egypt and north Africa through Europe, and has now been identified in the United States. Its primary vector appears to be chicken meat.

There is an interesting and troubling aspect to the spreading Kentucky strain that there wasn’t time to talk about last week, in the midst of the Heidelberg news. It’s this: The authors suspect that this enhanced resistance — to Cipro, and thus the class called fluoroquinolones that are very important in treating Salmonella — may have come into African chickens via drug use in aquaculture.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, animals, food, food policy, Resistance, salmonella, Science Blogs

Resistant Salmonella: Deadly Yet Somehow Not Illegal

August 5, 2011 By Maryn Leave a Comment

As the scale of the nationwide outbreak of Salmonella Heidelberg started to sink in Thursday — along with the stunningly large recall of 36 million pounds of ground turkey, much of it probably already eaten — there were a number of moments that made a careful listener need to stop and just think.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, animals, E. coli, food, food policy, foodborne, Resistance, salmonella, Science Blogs

Highly Resistant Salmonella: Poultry, Antibiotics, Borders, Risk

August 3, 2011 By Maryn Leave a Comment

If you’re a strain of Salmonella, it’s a very good week. If you’re a human, not so much.

There are two stories occurring simultaneously that underline the rising danger of drug-resistant organisms in the food supply, and the porousness of networks for detecting the dangerous bugs in time.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, animals, food, food policy, foodborne, Resistance, salmonella, Science Blogs

Attack of the Deadly Slime: Farm Effluent Ruins French Beaches

July 26, 2011 By Maryn Leave a Comment

Vacationers in northwest France are being warned to stay away from beaches, which are growing a bumper crop of a seaweed that releases a potentially toxic gas. The culprit: Up-stream releases of manure from intensive farming that overload the near-shore waters with nitrates.

The seaweed (sea lettuce, Ulva lactuca) must be removed within 48 hours of washing ashore — because as it rots, it releases so much hydrogen sulfide that swimmers and strollers are endangered. The French ministry for health and the environment has warned visitors to avoid areas with overgrowth, and told workers scooping up the seaweed that they must wear monitors to alert them they have entered especially toxic pockets and must clear out within minutes.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, animals, food, food policy, france, Science Blogs

Is Drug Resistance in Humans Coming From Chickens?

June 28, 2011 By Maryn Leave a Comment

There’s a new paper out in the CDC’s journal Emerging Infectious Diseases that makes a provocative claim: There is enough similarity between drug-resistance genes in  E. coli carried by chickens and  E. coli infecting humans that the chickens may be the source of it.

If it is correct — and it seems plausible and is backed by past research — the claim provides another piece of evidence that antibiotic use in agriculture has a direct effect on human health.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: animals, antibiotics, chicken, E. coli, food, food policy, netherlands, Resistance, Science Blogs

More MRSA, in milk: A new strain in cows and humans

June 3, 2011 By Maryn Leave a Comment

Despite the massive AIDS anniversary this week, I was expecting to write about the EU E. coli outbreak next. But there’s striking new news on MRSA that makes it worth putting off E. coli one more day. I’m traveling many time zones away from home, though, so this will be quick.

Researchers in England and Denmark have announced they have found a never-before recorded variant of MRSA in cow’s milk in England that has already caused human infections in England, Scotland and Denmark, and researchers in Ireland have simultaneously announced that they have found the same strain in hospitalized patients there as well.

Here’s how this unfolded:

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, animals, food, food policy, milk, MRSA, Science Blogs, ST398

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