Maryn McKenna

Journalist and Author

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Not Enough Antibiotics: Just an Incentives Problem?

June 20, 2011 By Maryn Leave a Comment

My college boyfriend and I used to have this conversation:

Me: “I’m so broke.”

Him: “Yeah, me too.”

Which was almost always followed, a few days later, by this conversation:

Him: “Let’s go get a beer.”

Me: “I thought you said you were broke?”

Him (after a puzzled pause): “Well, yeah, I was. But then I went to the bank.”

How is this relevant, you ask? Like this. When it comes to antibiotic resistance — that is, to the increasing number of infections against which many drugs are no longer effective — people seem to think like my ex: When we’re out, we go back to the bank for more. The problem is, when it comes to antibiotics, we’re not temporarily out. We’re broke for real.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: antibiotics, drug development, Resistance, Science Blogs

Goodbye, Team D? When One State's Cuts Hurt Everyone

June 14, 2011 By Maryn Leave a Comment

Here’s a little tip that will make you feel like a public-health insider. The next time you read any news related to foodborne illness in the United States, look for this word:

Minnesota.

The chances are good that you’ll find it, probably buried deep in the footnotes. That’s not because Minnesota has particularly unhealthy food. (Disregard those 47 things on a stick served at the State Fair.) Instead, it’s because Minnesota has excellent food detectives.

Largely thanks to its Scandinavian sense of social responsibility — Minneapolis is still Scandinavian enough that the cashiers in my downtown grocery store spoke Swedish to the older customers — Minnesota has always been willing to support a crack state department of public health.

E. coli in hazelnuts packaged in California? Salmonella-bearing red pepper in salami made in Rhode Island? More Salmonella in peanut butter from Georgia? Even more Salmonella in peppers from Mexico? Anthrax from downed cattle? Crypto from chicken salad? Solved by MNDoH, every one.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: E. coli, foodborne, minnesota, salmonella, Science Blogs

NDM-1 in a U.S. Military Hospital in Afghanistan

June 9, 2011 By Maryn Leave a Comment

File under: Really not good news.

Deep in the back of the weekly bulletin of the Centers for Disease Control and Prevention, there is a note that NDM-1, the “Indian supergene,” has been isolated from a patient in a U.S. military field hospital in Bagram, Afghanistan.

It’s been a few months since NDM-1 was in the news, so let’s recap. The acronym (for “New Delhi metallo-beta-lactamase 1”) indicates an enzyme that allows common gut bacteria to denature almost all the drugs that can be used against them, leaving two or three that are inefficient or toxic. It was first identified in a resident of Sweden, of Indian origin, who had returned to India for a visit, was hospitalized there, went back to Sweden, and was hospitalized again.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: Acinetobacter, gram negative, Military, NDM-1, Resistance, Science Blogs

E. coli: What we know and need to

June 8, 2011 By Maryn Leave a Comment

The stream of news from the E. coli O104:H4 outbreak in Germany has been so steady that it’s been hard to catch my breath long enough to post on it. The Robert Koch Institute in Germany said today that they think the epidemic curve is cresting, which makes me unusually late to the party. Nevertheless, since there are likely to be more cases and more deaths — and a long struggle still to understand what happened — I thought it would be useful to count up the things that we can say for sure, and those that remain puzzlingly open questions.

First: Is this the largest E. coli outbreak ever? According to food-safety uber-attorney Bill Marler, this outbreak — more than 2,600 victims, 13 countries, 26 deaths (Nature News has a great graphic of cases by country) — is dwarfed only by a 1996 epidemic in Japan. (Here’s Marler’s list). If it’s not the largest, it is likely to have produced the largest percentage of serious illness: As of today, there are 725 cases of hemolytic uremic syndrome (689 in Germany, 33 in the rest of Europe, three in the United States), according to WHO-Europe.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: E. coli, food, food policy, foodborne, Germany, Science Blogs

30 Years of AIDS, And How It Began. (Part 3)

June 4, 2011 By Maryn Leave a Comment

Read More:

Excerpt Part One

Excerpt Part Two

Tomorrow — June 5, 2011 — marks the 30th anniversary of the first recognition of the HIV epidemic. In honor of the occasion, I’m running excerpts from Beating Back the Devil, my 2004 book on the CDC’s disease-detective corps, because of one them wrote that first paper that described the first cases of what came to be known as AIDS.

In the first excerpt, physicians in Los Angeles begin to realize they are seeing something new and perilous among gay men in the city. In the second excerpt, they try to get the word out, but no one will help them. Today, they succeed — but for much of the country, the epidemic still goes unrecognized.

AIDS: 1981, Los Angeles (Part Three)

On a blistering Sunday afternoon, abnormally hot for mid-May, the two doctors met at Shandera’s apartment in West Los Angeles, a raffish, not-yet-gentrified mix of artists and ethnicities. Gottlieb brought the medical charts of the three patients he had seen and the fourth who had been sent to him. Shandera had the paperwork on the cancer patient in Santa Monica, who died shortly after Shandera interviewed him.

Riffling through the pages of treatment histories and test results, they drafted a short paper, only nine paragraphs long. It began matter-of-factly:

In the period October 1980-May 1981, 5 young men, all active homosexuals, were treated for biopsy confirmed Pneumocystis carinii pneumonia at 3 different hospitals in Los Angeles, California. Two of the patients died. All 5 patients had laboratory-confirmed previous or current cytomegalovirus infection and candidal mucosal infection.

They followed with a description of all five patients: Patient 1, 33 years old, diagnosed with pneumonia in March after two months of fever and liver dysfunction; dead. Patient 2, 30 years old, diagnosed with pneumonia in April after five months of fever and liver dysfunction, still experiencing daily fevers even though the pneumonia was gone. Patient 3, hospitalized in February with pneumonia. Patient 4, 29, successfully treated for Hodgkin’s disease three years ago, diagnosed with pneumonia in February; dead. Patient 5, 36, diagnosed with widespread yeast infection in September, hospitalized with pneumonia in April, still suffering from candida despite repeated courses of drugs.

There were no obvious reasons, the doctors added, why this should be an outbreak. The patients had very little in common.

The patients did not know one another and had no known common contacts… The 5 did not have comparable histories of sexually transmitted disease… Two of the 5 reported having frequent homosexual contacts with various partners. All 5 reported using inhalant drugs, and 1 reported parenteral drug abuse. Three patients had profoundly depressed numbers of thymus-dependent lymphocyte cells.

And in a tentative, carefully worded analysis, Gottlieb and Shandera underlined how odd those occurrences were.

The occurrence of pneumocystis in these 5 previously healthy individuals without a clinically apparent underlying immunodeficiency is unusual. The fact that these patients were all homosexuals suggests an association between some aspect of a homosexual lifestyle or disease acquired through sexual contact and Pneumocystis pneumonia in this population.

When the paper was done, the authors titled it, “Pneumocystis Pneumonia in Homosexual Men–Los Angeles.” Gottlieb signed his name to it, along with the names of Schanker, Fan, Weisman, and two other doctors who had seen the five patients. Shandera did not sign his name. By CDC tradition, EIS officers who contributed to the MMWR did not get named credit on papers; he was listed only as an anonymous representative of the “Field Services Division, Epidemiology Program Office, CDC.”

The next day, Shandera called the MMWR and dictated the report over the phone. The transcribed text was passed up the line to Dr. James Curran, chief of the CDC’s sexually transmitted diseases unit. He scrawled a note across the margins of the first page: “Hot stuff.”

Despite that endorsement, the paper did not make it into the MMWR unchanged. When it ran, on June 5, 1981, its title had been shortened to “Pneumocystis pneumonia–Los Angeles.” And it ran not on the cover of the booklet, but inside on pages 2 and 3. The placement, and the words cut from the title, came from a combination of protectiveness, squeamishness and tact. The MMWR staff were uncertain how much attention should be drawn to a problem that appeared to be afflicting only homosexuals.

The following week, pursuing a tip, Shandera visited the intensive care unit at LA County Hospital. There were three men in the ICU, all on respirators and dying. All three had pneumocystis pneumonia.

“That’s when I knew this was bigger than we realized,” he said. “I thought, if you can find patients this easily, immediately after a published report of something that looked rare, then this outbreak is of major importance.”

–  –  –

The disease described in their article was dubbed Acquired Immune Deficiency Syndrome — AIDS — in July 1982. the organism that causes it, HIV, was recognized in 1983. By the end of 2003, almost 200,000 medical journal articles has been written about HIV infection and AIDS. (By 2011, more than 300,000.) Shandera and Gottlieb’s was the first. By the beginning of 2004, there has been more than 20 million deaths from AIDS across the globe. (By 2009, almost 30 million.)

Gottlieb, who was just beginning his medical career in 1981, spent it working on AIDS. As its editor had promised, the New England Journal of Medicine accepted his article on the first patients and published it in December 1981. He treated many of the disease’s early victims in Los Angeles, including the movie star Rock Hudson. When Gottlieb announced to a July 1985 press conference that Hudson was dying of AIDS, he forced the epidemic into the awareness of mainstream American society, sparking a slow and reluctant political response. He never went back to the transplant-immunity work for which UCLA has recruited him, and after 8 years there did not receive tenure. Instead, he went into private practice and continued to do research.

Shandera took a different path. As he had planned, he left Los Angeles, less than a month after their urgent bulletin was published. It was a tumultuous time for him. He had hoped reassignment would allow him to see his ailing father, but his father died within a month. The potential relationship he planned to investigate in Baltimore did not ignite. He completed his second year in the EIS in Atlanta. Several times, he dropped in on meetings of the CDC’s early response to AIDS, a small task force of people pulled from their regular jobs who were struggling to keep up with the burgeoning epidemic. Soon, though, his new job pulled him away.

When his EIS stint ended, he left for a fellowship in clinical infectious disease research in Boston. He went into private practice in San Antonio, and then in Portland, and then returned to academic work in South Carolina, and then in Dallas, where he opened the first AIDS clinic in the city’s largest public hospital.

“We had only two doctors, and at the time only one drug,” he said. “We were on edge and emotional all the time. So many people were dying.”

He has wondered, sometimes, if leaving Los Angeles was the right thing to do. But he has never felt any ownership of the AIDS epidemic, or any sense that his name should be associated with it.

“If I hadn’t been there, someone else would have reported those cases,” he said. “If Mike hadn’t written his paper, someone else would have. I happened to be there, and it fell to me to see the first cases, but I played such a bit part.”

Flickr/Zoriah/CC


Filed Under: Science, Science Blogs, Superbug Tagged With: AIDS, CDC, HIV, 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

30 Years of AIDS, And How It Began. (Part 2)

June 3, 2011 By Maryn Leave a Comment

Read More:

Excerpt Part One

Excerpt Part Three

This Sunday — June 5, 2011 — marks the 30th anniversary of the first recognition of the HIV epidemic. In honor of the occasion, I’m running excerpts from Beating Back the Devil, my 2004 book on the CDC’s disease-detective corps, because of one them wrote that first paper that described the first cases of what came to be known as AIDS.

In the first excerpt, physicians in Los Angeles begin to realize they are seeing something new and perilous among gay men in the city. Today, they try to get the word out, but no one will listen.

AIDS: 1981, Los Angeles (Part Two)

The man’s name was Michael. He was 33 years old, tall and good-looking, with short, peroxided hair and prominent cheekbones. He was a model, he confided; he’d had his face enhanced with cheekbone implants.

He was also quite sick. He had been ill since October with a fluctuating fever and swollen glands in his neck and under his collarbone. The glands had gone down, but the fever would not go away. He had lost a lot of weight, and now he was losing his hair. He had raw patches of fluffy white growths — candidiasis, a yeast-like fungus, as well as herpes virus — inside his mouth, between his buttocks, and on his index fingers. The medical ward had run some tests already: He had an organism called cytomegalovirus in his urine, his white blood cell count was low, and one particular class of white cell, the T-lymphocytes, were much fewer than they ought to be.

All the findings pointed to the same conclusion: His immune system was not working the way it should.

There was no indication, though, why that should be so. He had not had cancer or chemotherapy. He had not had an organ transplant. He was not elderly — aging wears down the immune system — and he did not have an inherited immune deficiency, because children born with that condition seldom survived long, and certainly not to Michael’s age. There was no evidence that he had suffered any medical or environmental insults that would impair his immunity. His symptoms were treatable, but his underlying condition was unexplained.

When Gottlieb and Schanker arrived at his room, Michael was on the phone. He was telling a friend, archly, “These doctors tell me I am one sick queen.”

Michael’s symptoms were treated successfully, and he was discharged a week later. A month after that, he was readmitted to the hospital, still feverish but now almost unable to breathe. A resident who had treated him the first time, Dr. Robert Wolfe, spotted him on the same ward. Knowing the man’s immune system had been depressed before, and fearing a new infection had taken hold, Wolf ordered a chest X-ray and a bronchoscopy, a direct viewing of the airways through a flexible tube that lets its operator bring up specimens form deep in the lungs.

The results were perplexing and alarming. The air spaces in Michael’s lungs were filled with millions of Pneumocystis carinii, a microscopic protozoan that attacks cancer patients and recipients of transplants, people whose immune systems have essentially ceased to function. Pneumocystis was so rare that Gottlieb, a specialist in transplant immunology, had never seen a case.

The news buzzed through the Los Angeles medical grapevine. Shortly after Michael was readmitted, Gottlieb got a call from Dr. Peng Thim Fan, a rheumatologist, and Dr. Joel Weisman, an osteopath who had a general practice treating gay men. Weisman was also seeing patients with unexplained fevers and weight loss, lymphadenopathy, and cytomegalovirus infection. Gottlieb arranged to have two of the patients admitted to UCLA. By the time they arrived, they too had pneumonia. Before being put on respirators, they were bronchoscoped.

Like Michael, their lungs were full of pneumocystis, and their blood chemistries were awry. Their overall T-cell counts were not only low, but out of balance. There were almost no helper T-cells, the white blood cells that help manufacture antibodies to mount an immune defense against organisms. There were far too many cytotoxic and suppressor T-cells, the ones that kill invading organisms and then shut down the immune response.

All three men were seriously, inexplicably ill. Michael never left the hospital. He died May 3.

“In medicine,” Gottlieb said, “one case of something is a curiosity. Two cases is very interesting. But a third case, that makes you ask: Is this going to be something big?”

Gottlieb thought the answer was yes. Weisman was seeing more patients with stubborn fevers and fungal infections. Another friend had told him of a fourth case of cytomegalovirus infection, in a hospital in another part of town. If the mystery syndrome was sprinkled throughout Los Angeles, surely it would be of concern elsewhere also. He called the New England Journal of Medicine, the most respected medical journal in the country.

“I said we had at least three cases, all gay men, all with pneumocystis pneumonia, all with severe immune deficiency — something was up,” Gottlieb recalled. “I told them it might be bigger than Legionnaires’ disease.”

The journal’s editors were interested, but not enough to bend their strict rules. It would take at least three months to get an article reviewed by other doctors, approved, and into print, they said. And while it was being approved, Gottlieb would not be able to publish anything else about the mystery syndrome. The journal had an ironclad policy that anything appearing in its pages could not show up in another journal first.

There was a compromise, the editor-in-chief suggested. If Gottlieb wanted to alert the medical world rapidly, he could consider placing an article in the Morbidity and Mortality Weekly Report, the weekly bulletin published by the CDC. The Journal did not consider the staple-bound newsletter, the size of a folded sheet of paper, to be any kind of competition, If Gottlieb’s news appeared there first, he could still write a paper for the prestigious outlet later.

Gottlieb was a researcher and a clinician; he had very little contact with the world of public health. But he did, he realized, know someone at the CDC. He called Wayne Shandera.

–  –  –

Shandera and Gottlieb had always planned to get together in Los Angeles, perhaps to work on a project that combined their interests. Shandera had liked the idea, but the realities of health department work had gotten in the way. Here, though, was an opportunity to explore a truly interesting outbreak, even if it was occurring just as he planned to leave Los Angeles for good. EIS members were supposed to publish in the MMWR if possible. The diminutive booklet was the best-read magazine no one had ever heard of: Thousands of state health department epidemiologists and university infectious disease physicians pored over it every week.

So Shandera welcomed the call from his onetime attending, even though Gottlieb was carefully nonspecific.

“I said something like, ‘Hi, Wayne, how are you, I’m sorry I haven’t seen you lately — and by the way, are you hearing anything at the health department about anything unusual among gay men?'” Gottlieb said. “Because I wondered whether anyone else perhaps was already on to this. I can still remember him saying no, and feeling a bit let down. Because if no one else had noticed it, maybe we were over-reacting.”

Shandera promised to look around. He did not have to look far. One of the department’s epidemiologists had gotten a report from St. John’s Hospital in Santa Monica of a patient hospitalized with pneumocystis. As a health department employee, Shandera was allowed access to otherwise private medical records. He drove down to Santa Monica.

The patient was a 29-year-old man. He, too, was very ill. He had had Hodgkin’s disease, a lymphoma, three years before, but had recovered after radiation therapy. There was no evidence that the cancer had recurred, but he had had pneumocystis pneumonia for more than a month. Cytomegalovirus had been found in his system as well.

“He looked like the cancer patients I had seen at Stanford — like someone who had been through a lot of chemotherapy, or was suffering form very end-stage cancer,” Shandera said. “He was lying in bed, wasted, looking very thin. Pneumocystis pneumonia causes air hunger; you develop cyanosis, purpling and mottling of the skin, and you lose all your peripheral fat, like a famine victim.”

The man’s lover was with him, in the waiting room of the intensive care unit. Shandera talked to both men, and then drove back to Los Angeles. Epidemiologically speaking, the patient was not exactly like the others, because he had something in his recent past — cancer and cancer treatment — that could have disrupted his immune system. Still, the pneumocystis and cytomegalovirus were unusual enough to be striking. Shandera called Gottlieb back.

“There’s another one,” he said, adding almost as an afterthought: “This one is homosexual too.”

Gottlieb felt the hair on the back of his neck bristle. “I  knew it had to be related,” he said. “We had to get this out.”

Next: The warning, and what came afterward.

Flickr/MichaelSarver/CC


Filed Under: Science, Science Blogs, Superbug Tagged With: AIDS, CDC, HIV, Science Blogs

30 Years of AIDS, And How It Began. (Part 1)

June 2, 2011 By Maryn Leave a Comment

This Sunday — June 5, 2011 — marks what public health considers the 30th anniversary of the international epidemic of HIV-AIDS.

If you’d like a summation of the past 30 years, Larry Altman, the retired senior medical writer of the New York Times, did an excellent job last Tuesday. And the Centers for Disease Control and Prevention summed up, in a paper released at noon ET, the state of the epidemic today.

I was not yet a reporter when the plague began, so my memories of that time are not professional memories, but personal. I was a student, studying mostly theatre, and almost all my friends were gay. And suddenly my friends were dying. People who remember will know what I mean. We got used to seeing people we worked and drank with looking, abruptly, like famine victims. We grew battlefield-numb bringing meals, and attending memorials, and calling people’s mothers on their death anniversaries. We knew when the multi-drug cocktails that changed the course of the epidemic had arrived, not because we read the journal articles, but because suddenly we could take our florists off our speed-dial.

I worry, in the complacency that has settled now around HIV as an almost-chronic illness, that the stunning initial impact of this disease that changed the planet has been somehow forgotten. So for my next three posts, I’m going to take you back to those days.

Read More:

Excerpt Part Two

Excerpt Part Three

A few years ago, I wrote a book chronicling the history of the Epidemic Intelligence Service, the young disease-detective corps of the CDC. EIS officers, as they’re called, were in on every major disease event of the last half of the 20th century: the end of smallpox, the beginning of the end of polio. And though his name was never well-known and has been almost forgotten, one of them alerted the world to the first known cases of AIDS.

His name was Wayne X. Shandera, and the anniversary that we’ll mark on Sunday is actually the 30th anniversary of the publication of his urgent bulletin, the first in any medical journal to describe a case of HIV.

Below is Chapter 6 of Beating Back the Devil. We begin in California, in the winter of 1980, where Wayne Shandera is contemplating his options for his 2-year stint in the EIS.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: AIDS, CDC, HIV, Science Blogs

MRSA in meat: How much? Which? And more bad news.

May 31, 2011 By Maryn Leave a Comment

(Sorry for the radio silence, constant listeners. It’s been a challenging few weeks at Casa Superbug, with a death in the family and the chaos afterward of catching up to the rest of life. But back now, with some interesting stuff planned for later this week.)

Last week was the General Meeting of the American Society for Microbiology (ASM). This is the conference at which, several years ago, Tara Smith’s team at the University of Iowa first announced they had found MRSA ST398 in pigs in the United States, so it always bears watching for new MRSA news, and this year it didn’t disappoint.

First: I’ve complained persistently because the federal system that monitors antibiotic-resistant bacteria in animals and food, NARMS (National Antimicrobial Resistance Monitoring System) doesn’t include MRSA among the pathogens that it tracks. It is possible that might be changing — because at ASM, a team from the Food and Drug Administration reported the results of a pilot study that looked for MRSA in retail meat in the US and found it.

[Read more…]

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

Growth Promoters: If You Can't Convince Them, Sue Them

May 25, 2011 By Maryn Leave a Comment

A little less than a year ago, the Food and Drug Administration took a step that, depending on your point of view, was either far too activist or nowhere-near-enough-but-good-try: It proposed, in a draft document, that the agricultural industry voluntarily restrict its use of growth-promoting micro-doses of antibiotics.

It was a significant step. The FDA has been trying to restrict subtherapeutic use of antibiotics in livestock since the 1970s because of the practice’s clear contribution to the development of antibiotic resistance, and had always been defeated. At the same time, it was far from bold: The proposal was made in a draft document that would be made final at some unspecified future date, and that when it became final would have behind it no force of regulation or law. (Here’s my long discussion from last year of the context and history of FDA’s move.)

And there things rested, while the FDA’s docket reportedly filled up with thousands of comments from both sides of the issue. The document — formally, Draft Guidance #209, Judicious Use of Antimicrobial Drugs in Food-Producing Animals — is scheduled to be finalized sometime before the end of this year. But in its draft form, it excited abundant opposition, and the administration official who seemed to be leading the charge on it, memorably suggesting, “We have the regulatory mechanisms and the industry knows that,” has left the FDA for a state-government job.

Clearly, things aren’t moving very fast. So today, a coalition of nonprofit groups attempted to get the issue jump-started: They sued.

[Read more…]

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

Drug-resistant bacteria in bedbugs

May 11, 2011 By Maryn Leave a Comment

Being Scary Disease Girl, I seem to have earned a reputation for never wincing in the face of weird disease threats.

But this, I admit, makes me go squick:

Researchers in Vancouver, BC have found bedbugs there carrying drug-resistant staph, MRSA, and vancomycin-resistant enterococci, VRE.

(Deep breath.)

(Another deep breath.)

OK, details: [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: bedbugs, Canada, MRSA, Science Blogs

Farm Antibiotics: 'Pig Staph' in a Daycare Worker

May 9, 2011 By Maryn Leave a Comment

It’s been just about seven years since an alert epidemiologist in the Dutch town of Nijmegen identified an aberrant strain of MRSA, drug-resistant staph, in a toddler who was going in for surgery to fix a hole in her heart. The strain was odd because it didn’t behave normally on the standard identifying tests, and because it had an unusual resistance factor — to tetracycline, a drug that it should not have been resistant to, because the Netherlands had such low rates of MRSA that tetracycline wasn’t being used against the bacterium there.

Pursuing the source of the strain, researchers at Radboud University found it in the toddler’s parents and sister, and in the family’s friends. Not knowing where else to look, they asked what the parents and their friends did for a living; discovered they were all pig farmers; and went to their farms, and checked the pigs, and found it being carried by them, too. Suddenly, that strange resistance pattern made sense: The Netherlands uses more antibiotics in pig agriculture than any other country in the European Union, and the drug that it uses the most is tetracycline. Clearly, the aberrant strain — known as MRSA ST398 for its performance on a particular identifying test — at some point had wandered into pigs, become resistant to the drugs being given to the pigs, and then crossed back to humans, carrying that new resistance factor as it went.

[Read more…]

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

Turning grief into action: Moms and antibiotic misuse

May 3, 2011 By Maryn Leave a Comment

In December 2007, I flew to Chicago to meet the team of researchers who spotted the first known cases of community-associated MRSA in the US in the mid-1990s, and who have been agitating ever since for recognition and action to beat back the rising tide of antibiotic resistance. It was grey and snowy outside their shabby suite of offices, carved out of University of Chicago’s long-replaced children’s hospital. I sat in a green-tinged conference room piled with stacks of articles while Everly Macario — a Harvard-trained ScD in public health, the daughter and sister of physicians — described how MRSA killed her toddler son Simon in less than 24 hours.

“We have no idea where he got it,” she told me. “We have no idea why he was susceptible.”

Simon Sparrow was 17 months old in April 2004, a big, sturdy child with no health problems except a touch of asthma. The day before he died, he woke up feverish and disoriented, startling his parents with a cry unlike anything they had heard from him before. It was a busy morning — his older sister had a stomach virus — but they got him to the pediatric ER, got him checked, and brought him home when doctors found nothing unusual going on.

A few hours later, Everly was working at home, watching both kids, and Simon’s breathing changed. Her husband James, a history professor, had driven a few hours away to give a speech. She called a friend who is a pediatrician, held the phone up to Simon’s nose and mouth so she could hear, and then got back on the line.

“Hang up,” her friend said. “Call 911.” [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, antibiotics, food, food policy, MRSA, Science Blogs

What Vaccine Refusal Really Costs: Measles in Arizona

April 29, 2011 By Maryn Leave a Comment

Every once in a while, there’s news of a measles outbreak. On the surface, they don’t involve large numbers of cases — there’s one in Minneapolis right now that has racked up 21 cases so far — and so people seem to wonder why these outbreaks are such a big deal.

Here’s one reason why: Measles transmission within the US stopped in 2000 because of vaccination. Outbreaks here start with an importation from somewhere else where the disease still flourishes — but they gain a foothold because lack of vaccination, primarily from vaccine refusal, lets the disease get past what should be an impregnable barrier of herd immunity to attack those who are too young to be vaccinated or whose immunity has faded.

Here’s another reason: Stopping the measles virus before it can cause serious disease — and by “serious,” I mean deafness, pneumonia, encephalitis and miscarriage — is incredibly costly and labor-intensive. An account published overnight in the Journal of Infectious Diseases gives a glimpse at just how costly. To stop a 14-person outbreak that began with one unvaccinated tourist visiting a US emergency room, the Arizona Department of Health had to track down and interview 8,321 people; seven Tucson hospitals had to furlough staff members for a combined 15,120 work-hours; and two hospitals where patients were admitted spent $799,136 to contain the disease.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: measles, Science Blogs, vaccines

The biggest foodborne-disease threat may not be addressed by the new food-safety law

April 28, 2011 By Maryn Leave a Comment

So if we wanted to reduce the danger of pathogens passing to people via food — not just drug-resistant bacteria, which are an increasingly significant problem, but all disease-causing ones — where to start?

Formulating a strategy is more difficult than it seems. In the US, policing food safety is divided among several federal agencies: the FDA, USDA and CDC. The FDA has responsibility for most of the food supply, including seafood, produce, processed food and fresh eggs. The USDA’s Food Safety and Inspection Service (FSIS) regulates fresh meat and poultry and egg products. The CDC surveys the illnesses that result from any of them, estimating most recently that one in six US residents, or about 48 million people, get sick each year, 128,000 are hospitalized and 3,000 die.

But most of those illnesses are never investigated, because a substantial portion of them occur individually or in small clusters, not in major outbreaks. Many of them have long-term consequences that are never recorded by any federal counting mechanism. And there’s currently no surveillance system that links pathogens and food — which means there’s no way to target which foods, or food-raising practices, pose the greatest risks.

The new food-safety bill, signed in January, addresses at least some of those barriers, by requiring a risk-based approach to foodborne illness — meaning, you look at what is causing the greatest problem, and aim your efforts and funding in that direction. But the bill — which certain Congressmen have threatened to starve of funding — covers primarily the FDA. And a new analysis suggests that’s not where the greatest problems lie. [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, CDC, FDA, food, food policy, foodborne, FSIS, Resistance, salmonella, Science Blogs, USDA

Bacterial music-video festival (tornado edition)

April 28, 2011 By Maryn Leave a Comment

We had scary-bad weather in the Southeast the past two days. Thankfully, there was no serious damage where I am, but the devastation to the north and west is appalling, with about 180 300 deaths so far. Please spare a thought for them.

It’s going to take me a while to haul my working materials back out from the storm shelter, and by storm shelter, I mean first-floor closet under the stairs behind the washing machine, which was about the only place that would have been protected from shattering glass and flying roof materials.

So in the meantime: This morning, Twitter tossed up a UK hospital’s attempt to energize its staff to wash their hands more frequently. It’s sweet, funny, and — apologies to the participants — unavoidably snark-inducing. Have a look: [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: MRSA, Science Blogs, Video

Multi-Drug Resistant Staph in 1 in 4 Meat Samples

April 15, 2011 By Maryn Leave a Comment

Much of the contentious debate over abuse of antibiotics in farming boils down to a couple of simple questions: Whether resistant organisms that arise on farms because of antibiotic use leave the farm, and whether, once they do, they reach human beings.

A piece of research due to be released this morning in the journal Clinical Infectious Diseases helps answer both those questions. (I received an advance copy under embargo; I’ll put up the link when the journal posts it. here’s the link to the full-text pdf.)

A team of researchers from Arizona bought meat and poultry in five cities across the United States, tested them for bacteria, and found this: 47 percent of the samples contained the very common pathogen Staphylococcus aureus, and 96 percent of those isolates were resistant to at least one antibiotic. Of more concern: 52 percent of those staph isolates were resistant to at least three antibiotics that are commonly used in both veterinary and human medicine.

That is: Roughly one in four packages of meat and poultry from across the United States contained multidrug resistant staph. [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, antibiotics, food, food policy, Science Blogs, ST398

Great reads: POX — a history of vaccine resistance

April 13, 2011 By Maryn Leave a Comment

A swiftly moving contagious disease threatens children. The government urges parents to vaccinate. But parents are suspicious: They believe the vaccine has unpredictable side-effects and they distrust the government’s motives. When persuasion fails, coercion takes its place. The government demands vaccination — and a showdown looms.

In many aspects, that vignette sounds like today, when pertussis and measles are spreading through unvaccinated children. But what it actually describes is a lost episode of history: not 2010, but 1900, when smallpox spread across the country and life-saving universal — and compulsory — vaccination was imposed on the US population.

In a new book, POX: An American History (The Penguin Press, $27.95) historian Michael Willrich describes what happened next.

I wrote a history of US public health, and so I thought I knew something about vaccines, but I had never heard this story. I asked Willrich, an associate professor at Brandeis University, to answer some questions about it.

Among all the vaccine-preventable diseases, smallpox was uniquely deadly — and so I always assumed there was wide agreement over eliminating it. But POX tells the story of a broad, and surprisingly little-known, resistance movement against smallpox vaccination. Tell us that history briefly. [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: Books, Science Blogs, smallpox, vaccines

World Health Day update: Use an antibiotic, pay a fee?

April 8, 2011 By Maryn Leave a Comment

So if we agree that the untrammeled rise in antibiotic resistance is a bad thing — and given the unexpected World Health Day news that an incredibly resistant bacterium is in New Delhi’s water supply, I think many do agree — what do we do next?

How about charging everyone who buys an antibiotic a user fee?

That’s one of the surprisingly nervy proposals that surfaced Thursday during World Health Day, a refreshing change from the somber but predictable rhetoric put forward by the WHO and CDC. It comes from a comprehensive set of policy recommendations released Thursday by the Infectious Diseases Society of America in the journal Clinical Infectious Diseases and at a press event in Washington DC.

The direct language in the recommendations’ introduction indicates their tone:

The availability of effective antibiotics is not a ‘‘lifestyle’’ issue, and the lack of availability of these agents is not theoretical. Society worldwide is facing a public health crisis due to stagnation in the antibiotic drug pipeline combined with rapidly spreading, deadly antibiotic-resistant pathogens. The lack of effective antibiotics already is resulting in deaths and maiming of patients and the problem will only continue to worsen until Congress and the Administration act. The time for debate about the problem has passed. Immediate action is critically needed now.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: antibiotics, CDC, FDA, Resistance, Science Blogs, Who

Superbugs Found in New Delhi's Water and Sewage

April 7, 2011 By Maryn Leave a Comment

Last fall, not long after the bloom of news about the “Indian superbug” NDM-1 — a newly identified enzyme that renders common gut bacteria indifferent to almost all antibiotics — I spoke to one of its lead researchers, Timothy Walsh of the University of Cardiff, about next steps in their research.

His work and his collaborators’ had demonstrated that many of the people infected with or carrying bacteria that incorporated the gene had undergone medical treatment in India and Pakistan, sometimes for elective surgery such as medical tourism, sometimes because they had been injured or ill while traveling. But not all, he said — and that was making them wonder whether the spread of NDM-1 had an environmental component. It was a plausible hypothesis given the apparent concentration of NDM-1 in India, a country whose sanitation systems have not kept up with its booming population. A recent UN report estimated that almost half of India’s residents — that would be up to 650 million people — lack treated drinking water and modern toilets. If you sat down to design a system to facilitate the spread of an enzyme carried by bacteria in the gut — that is, in feces — you couldn’t do better than what India already has.

“There has been very little work done or analysis done on the effect that (poor sanitation) would have on the spread of resistance and on carriage of NDM-1 within a normal population,” Walsh told me at the time. “There’s no water sampling for fecal flora or antibiotic-resistant flora.”

Well, now there is: Walsh and his collaborators have done it. And the news, as they suspected, is bad. [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: antibiotics, india, NDM-1, Resistance, Science Blogs

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