Maryn McKenna

Journalist and Author

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Tick-Borne Infections Infiltrate U.S. Blood Supply

September 6, 2011 By Maryn Leave a Comment

Allow me a tiny I Told You So. In February, I wrote a story for SELF Magazine about the rising incidence of diseases other than Lyme that are caused by tick bites. (And told you about it here, of course.) The story highlighted one particular tick-borne parasite, Babesia, and a serious problem with the infection it causes, babesiosis: that it was moving into the blood supply. We dug through FDA transcripts and CDC field reports in order to reveal that federal health authorities were very concerned about this prospect, and that more than 100 babesiosis infections caused by transfusions had already occurred — not just in the few states  where the tick species carrying Babesia are found, but throughout the United States because blood products are shipped nationwide.

Ours was the first reporting we could find about babesiosis in the blood supply, and it didn’t get the attention it should have, probably because women’s magazines tend to be dismissed as not-serious — even though SELF’s health and medical reporting has won prizes and been turned into books. But based on research released this morning, our story at SELF wasn’t hyping the problem. If anything, we understated it.

OK, enough infomercial. Here’s the news: In a paper released ahead-of-print by the Annals of Internal Medicine, researchers from the Centers for Disease Control and Prevention, Rhode Island and New York State report that 159 cases of babesiosis were caused by transfusions in the past 30 years  and “the risk may be increasing.” Twenty-seven of the patients died.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: babesiosis, CDC, FDA, Science Blogs, ticks

Is Polio Eradication Slipping Out of Reach?

July 26, 2011 By Maryn Leave a Comment

Over the weekend, I sat in an airport in the midwestern United States for a 12-hour stretch, trying to get a standby seat. Time after time, the goal was in sight — the customer service agents and the video screen hanging from the ceiling all told me I was No. 1 on the waitlist — but every time a flight opened up to boarding, a few higher-priority customers popped up at the last minute and slid onto the list in front of me. The possibility of my getting a seat dangled just out of reach: never impossible, but despite the exhausting wait, never quite achieved.

I suspect this is what polio eradication feels like.

The long effort to wipe the paralyzing disease from the planet, begun in 1988 by a coalition of the World Health Organization, the Centers for Disease Control, UNICEF and the service organization Rotary International (recently joined by the Bill and Melinda Gates Foundation), has several times missed its goal of interrupting all transmission of wild virus — first in 2000, then in 2002 and then again in 2005. The hoped-for date has been moved again, to the end of 2012 this time.

But last week, an independent assessment bluntly warned that the international effort “is not on track to interrupt polio transmission as it planned to do by the end of 2012” and likely will miss that goal as well.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: CDC, Nigeria, Pakistan, polio, Science Blogs, Who

Some Paranoia for Your Weekend: CONTAGION Trailer

July 15, 2011 By Maryn Leave a Comment

Warner Brothers has released the first trailer for CONTAGION, a Steven Soderbergh bio-thriller about an influenza strain gone virally rogue that will open Sept. 9. Quoting from the movie’s website:

“Contagion” follows the rapid progress of a lethal airborne virus that kills within days. As the fast-moving epidemic grows, the worldwide medical community races to find a cure and control the panic that spreads faster than the virus itself. At the same time, ordinary people struggle to survive in a society coming apart.

Delicious exchange from the trailer (zinger response from Laurence Fishburne):

“Is there anyway someone could weaponize the bird flu?”

“Someone doesn’t have to weaponize bird flu. The birds are doing that.”

Here’s the trailer. You are made of stern stuff if it doesn’t make you want to wash your hands. (I’ll be over here in the corner, rubbing mine together in scary-disease glee.)

[HTML1]

Filed Under: Science, Science Blogs, Superbug Tagged With: CDC, H5N1, influenza, Science Blogs, Video, Who

File Under WTF: Did the CIA Fake a Vaccination Campaign?

July 13, 2011 By Maryn Leave a Comment

A number of years ago, I was in New Delhi, at the end of an exhausting 18 hours  in which I had torn around the city to watch a National Immunization Day. On those days — like a national holiday, with flags and banners and kids let out from school — tens of millions of children line up to stick out their tongues and receive the sugary drops that contain the vaccine that should protect them against polio.

The Indian government, along with the Centers for Disease Control, the World Health Organization and the volunteer ground troops of Rotary International, has been organizing these days now for most of two decades, always coming closer to the goal of eradicating polio, never quite getting there. On this day, which occurred close to the end of weeks I had spent embedded with a WHO “STOP Polio” team, 135 million children were expected to queue in cities and suburbs and rich neighborhoods and slums. I spent the day with the team I had been observing, racing in a battered turquoise Tata from neighborhood to neighborhood, trying to understand where the campaign’s message was working and where its earnest persuasions had failed. (You can read my account of the day here.)

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: CDC, CIA, india, polio, Science Blogs, vaccination, Who

The Clap Came Back: Multidrug-Resistant Gonorrhea

July 11, 2011 By Maryn Leave a Comment

Among the many unintended consequences of the 30-year AIDS epidemic has been a profound change in status for other sexually transmitted diseases. It feels slightly bizarre, for anyone who came of age after HIV arrived, to realize that syphilis and gonorrhea and their ilk were once as profoundly dreaded as AIDS is now, so important that they were considered major threats to military campaigns and were the first treatment targets for the earliest antimicrobial drugs.

Judging by data released Friday by the Centers for Disease Control, it might be time to take them seriously once again.

[Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: antibiotics, CDC, gonorrhea, Japan, Norway, Resistance, 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

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

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

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

World Health Day: Time to tackle resistance

April 6, 2011 By Maryn Leave a Comment

Tomorrow, Thursday, is World Health Day, an annual observance that the World Health Organization uses to focus attention on some critical global-health issue. This year, they’ve chosen antimicrobial resistance as the issue that most needs highlighting. Noting the choice, the Lancet editorialized: “Resistance has joined the front rank of global health concerns.”

On the day, the WHO and some other agencies and organizations will be announcing plans and strategies. I’ll cover those tomorrow. For today, a scene-setter: Why you should care.

Having spent the last couple of years immersed in antibiotic resistance (because, you know, I wrote a book about it), I’m often puzzled why it doesn’t excite more alarm. I’ve concluded our situation is similar to the overused analogy of the frog in the slowly warming water: We don’t realize how bad things have gotten, even when we’re in imminent danger of death.

So here’s a round-up to remind us, drawn just from recent news.

In hospitals: Very large hospital systems are using more broad-spectrum last-resort drugs. Last weekend, representatives of the Veterans Health Administration disclosed that over 5 years, vancomycin use has gone up 79 percent, and carbapenem use, 102 percent. Vancomycin is the only affordable drug of last resort for MRSA; carbapenems are the drugs of last resort for gram-negative infections such as Klebsiella. The use of those drugs is growing because organisms are becoming multi-resistant to less-powerful drugs, but they are becoming resistant to the big guns too. Carbapenem resistance in Acinetobacter, a bacterium that afflicts ICU patients and gravely wounded military members, rose from 5 percent of isolates in US hospitals in 2000 to 40 percent in 2009. Israeli scientists reported this month that carbapenem-resistant Klebsiella pneumoniae (CRKP, subject of my Scientific American article this month) caused a nationwide outbreak in 2007 and 2008, sickening 1,275 patients in 27 hospitals before it was brought under control. [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: animals, antibiotics, CDC, CRKP, KPC, MRSA, Resistance, Science Blogs, Who

The Enemy Within: A new superbug, KPC/CRKP

March 28, 2011 By Maryn Leave a Comment

Remember NDM-1, the “Indian supergene” that created a media furor last fall and then fell below the news horizon? This is worse.

I have a story in the April Scientific American (“The Enemy Within,” just previewed online) about a new and very troubling form of antibiotic resistance: Carbapenem resistance, spreading through Gram-negative bacteria such as Klebsiella (above, from the CDC) and E. coli.

Carbapenems are drugs of last resort for Gram-negatives, which include many of the bacteria that cause potentially deadly infections in debilitated ICU patients and frail elderly in nursing homes. Gram-negatives have been becoming ever-more resistant to antibiotics, but the carbapenems remained reliable drugs of last resort for even the most serious cases. Then, in 1996, researchers at the Centers for Disease Control and Prevention spotted the first signal that carbapenems were under threat: A single bacterial sample, found in a patient in a North Carolina hospital, that was resistant to the carbapenems and could only be treated by a few remaining drugs that were much less effective or so toxic that medicine had put them on the shelf years ago.

By 2000, that same resistance pattern surfaced in hospitals in Manhattan: first one, then another, then a third and fourth. Then it began to spread to cities where New Yorkers vacation, and then to countries where they travel. Now, more than a decade later, it has reached at least 37 states and at least a dozen countries around the world.

It is spreading much faster than drugs to combat it could be developed — if there were such drugs. One of the difficulties, indeed tragedies, of carbapenem resistance is that there are very few such drugs left — because, for reasons I’ve explored before, drug development in the United States has ground to a halt. For resistant Gram-negatives, there are almost no drugs left, and none on the immediate horizon. If that scares you, well, it should.

Here’s a quick snip from the article:

The end of the antibiotic miracle is not a new theme. For as long as there have been antibiotics, there has been antibiotic resistance: The first penicillin-resistant bacteria surfaced before penicillin was even released to the marketplace in the 1940s. And for almost that long, doctors have raised the alarm over running out of drugs, sparked by the global spread of penicillin-resistant organisms in the 1950s and followed by methicillin resistance in the 1980s and vancomycin resistance in the 1990s.

This time, though, the prediction of post-antibiotic doom comes from a different part of the microbial world. The genes that confer carbapenem resistance have appeared over the past decade or so in a particularly challenging grouping of bacteria called gram-negatives.

Gram-negative bacteria are promiscuous: They facilely exchange bits of DNA, so that a resistance gene that arises in Klebsiella, for example, quickly migrates to E. coli, Acinetobacter and other gram-negative species. Gram-negative germs are also harder to dispatch with antibiotics because they have a double-layered membrane that even powerful drugs struggle to penetrate, and possess certain internal cellular defenses as well. In addition, fewer options exist for treating them. Pharmaceutical firms are making few new antibiotics of any type these days. For the protean, stubborn gram-negatives, they have no new compounds in the pipeline at all.

Carbapenem resistance has already brought hospital-acquired infections to the brink of untreatable. The imagined future that keeps health authorities awake at night is the undetected dissemination of carbapenem resistance genes into organisms that cause everyday maladies—such as E. coli, which is responsible for most of the millions of urinary tract infections in the U.S. every year.

Carbapenem resistance in Klebsiella — which is sometimes called KPC or CRKP for short — got a spike of attention last week just as my piece hit the web. Coincidentally, the article posted just as the Los Angeles County Department of Public Health released results of a survey showing 356 cases just between June and December 2010 just in LA County medical facilities.

This SciAm piece is the first that we know of to tell the whole tangled, troubling story. I hope you’ll take a look.

And while you’re there, please read SciAm’s brave and cogent editorial against antibiotic overuse in industrial-scale agriculture. It’s marvelous.

CDC Public Health Image Library

Filed Under: Science, Science Blogs, Superbug Tagged With: agriculture, antibiotics, CDC, CRKP, KPC, Resistance, SciAm, Science Blogs

Tuberculosis: Forgotten but not gone

March 24, 2011 By Maryn Leave a Comment

It’s World TB Day: 129 years ago today, Robert Koch announced the identification of the tuberculosis bacillus. It must have looked, back then, as though solving TB — effectively the AIDS of the 19th century, the disease that took leading artists and writers in the prime of their creative lives and inspired novels, poems and operas of loss — was tantalizingly close at hand.

But not. In 2011, the World Health Organization reports, tuberculosis is stubbornly persisting, and the twin problems of multidrug-resistant and extensively drug resistant TB — MDR and XDR — are growing worse. [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: CDC, Science Blogs, TB, Who

Some hospital infections sharply reduced. Others, not.

March 2, 2011 By Maryn Leave a Comment

Important news from the CDC Tuesday: A particularly deadly kind of hospital-acquired infection, CLABSIs — central line-associated bloodstream infections — was sharply suppressed across the 2000s. There were an estimated 43,000 in intensive-care unit patients in 2001 and an estimated 18,000 in 2009, a drop of 58 percent. That’s excellent: Up to one out of four patients who contracts a CLABSI dies as a result of it. According to the CDC report, the numbers represent — just in 2009 — 6,000 lives saved and and $414 million in healthcare costs that didn’t have to be spent. Across the decade, the lives saved might go as high as 27,000, and the total savings, $1.8 billion.

But the news is not uniformly good. CLABSIs are still prevalent outside of ICUs, in general in-patient care, and especially in outpatient care such as dialysis. In 2009, there may have been 23,000 CLABSIs in hospitals but outside of ICUs, and 37,000 in dialysis-clinic patients. [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: CDC, HAI, Science Blogs

Lie Down With Dogs, Get Up With Fleas. And Plague

February 25, 2011 By Maryn Leave a Comment

Do you let your dog sleep on your bed? You do, don’t you? Once you read this story, you might want to rethink that.

There were only two cases of bubonic plague in humans in the United States last year. They were two people, unidentified except for their ages  — 17 and 42 — who lived in the same household in the high desert country of Lake County, Oregon. In August, they both came down with high fevers and hard, lumpy swellings in their groins. The older one, a woman, was very sick, was hospitalized with low pulse and blood pressure, and went into kidney failure.

Physicians couldn’t figure out what was wrong. In her blood, they found a rod-shaped bacterium. Four different diagnostic labs took a crack at identifying it. The first said it was Acinetobacter lwoffii. The second suggested it was Pseudomonas luteola. The third guessed Yersinia pseudotuberculosis.

It wasn’t until 25 days had passed, and the woman and teen had recovered, that the isolate got handed up to the regional health district laboratory, part of the state health department. Then someone identified it for what it was: Yersinia pestis, the bacterial cause of plague.

That rang all kinds of alarm bells. Plague is a Category A bioterrorism agent, the highest ranking of three: It causes severe illness and can pass from person to person. Also, it triggers what planners bluntly term “public panic and social disruption”: For centuries, plague has been something we are very, very scared of.

It also makes people very, very sick. On average in the United States — where there are only a few cases per year — one out of seven people who contract plague die of it. If bubonic plague goes untreated, the death rate goes up to one out of two.

So a case of plague makes public health investigators, and bioterrorism responders, come running. And as recounted by the CDC Friday morning, they ran to Oregon — and found no sign that this rural household had been subjected to a bioterror attack or involved in anything nefarious. But they did find dogs. One of the dogs slept on the bed of one of the humans. They checked the dog, which looked healthy, and in its blood they found evidence that, at some earlier point, the dog had been infected with Y. pestis too.

Where did it come from? The natural hypothesis is fleas.

Rodents — rats, but also mice, chipmunks, prairie dogs, ground squirrels — are a natural reservoir for Y. pestis. Fleas on shipboard rats were the vector that carried the plague from Asia to Europe in the 14th century, eventually killing one-third of the population of the Western world. Fleas from wild rodents are the source of the 10 to 20 cases of human plague in the United States every year. And fleas, apparently, had bitten this dog.

Imagine it: A loved dog, probably a big dog, racing through a dog’s perfect landscape: flat, wild, open, full of things to chase and smell and stick its nose into. Running after chipmunks. Tearing through prairie dog burrows. Romping home happily to flop on the bed and dream, while the fleas that jumped onto it hop off again, from the dog to the quilt, from the quilt to the pillow, from the pillow to the owner sleeping unknowingly alongside.

Imagine that, for a minute. And then go buy a flea collar.

Cite: Centers for Disease Control. “Notes from the Field: Two Cases of Human Plague — Oregon, 2010,” MMWR [Morbidity and Mortality Weekly Report], Feb. 25, 2010.

KeokiSeu/Flickr/Creative Commons

Filed Under: Science, Science Blogs, Superbug Tagged With: CDC, Oregon, Science Blogs

Food safety: Needs speed, technology — and funds

February 24, 2011 By Maryn Leave a Comment

Perhaps you remember the Great Tomato Scare of 2008.

It started in mid-May, when the New Mexico Department of Health told the Centers for Disease Control and Prevention that it had identified a  Salmonella cluster: four people who were infected with an identical, uncommon strain called Salmonella Saintpaul, and another 15 who seemed to be part of the same outbreak but whose infections hadn’t been characterized enough for authorities to be certain. Then there were cases in Texas, and then more cases in the Navaho Nation. By June 9, 2008, there were at least 150 cases nationwide; by July 1, the count was 869. By the time the outbreak ended in late August, there would be 1,499 victims — almost certainly an undercount — in 43 states. Two people died.

The outbreak was chaotic. On June 3, based on some early studies, the Food and Drug Administration warned people in New Mexico and Texas against eating certain types of raw tomatoes; on June 7, the FDA expanded the warning to nationwide. Investigators were puzzled by tomatoes causing an outbreak so early in the season, and hypothesized that they must have been grown in a warm climate area — maybe California, Florida or Mexico. Then they were troubled by how widely the outbreak spread. Because tomatoes can come from so many different places, they wondered whether the source of the contamination wasn’t the growing fields, but rather a packing house or a wholesaler where fruit from many different farms came together.

Consumers were just as confused. The FDA said raw red plum, red Roma and red round tomatoes were no-gos, but cherry tomatoes, grape tomatoes and tomatoes sold on the vine were OK. People were unsure what was safe to eat and from where it was safe to buy. The entire enormous tomato industry — 8 billion pounds per year in the US — ground to a halt.

There was just one problem: The cause of the outbreak wasn’t tomatoes at all. [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: CDC, FDA, food, food policy, food safety, salmonella, Science Blogs

Running out of antibiotics — and other drugs too

February 23, 2011 By Maryn Leave a Comment

Last night, the Journal of the American Medical Association posted ahead of print an editorial by Dr. James Hughes, former director of the National Center for Infectious Diseases at the CDC and now a professor of medicine and global health at Emory University. It’s a blunt and eloquent plea for attention to a problem that many people haven’t yet faced up to: We’re running out of antibiotics.

Antimicrobial agents have saved millions of lives and improved the outcomes for countless patients since these drugs were introduced in the early 1930s. However, the effectiveness of these lifesaving resources is at risk. Many medical advances that physicians and patients take for granted—including cancer treatment, surgery, transplantation, and neonatal care—are endangered by increasing antibiotic resistance and a distressing decline in the antibiotic research and development pipeline. (JAMA Hughes)

Drug resistance is a biologic inevitability — but in the 83-year history of the antibiotic miracle, starting from Fleming’s first recognition of natural penicillin, whenever resistance made one drug useless, another drug came along to save us. Those days are over. [Read more…]

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

The dangers of ticks: Not just Lyme disease

February 18, 2011 By Maryn Leave a Comment

I have a story in the forthcoming March issue of SELF Magazine that has just been put up online: The Rising Dangers of Ticks. It’s a long look at the under-appreciated other diseases that can be transmitted by tick bites — that is, not the Lyme disease that most people associate with ticks, but babesiosis, erlichiosis, anaplasmosis, and others. From the story:

“We’ve seen pretty dramatic increases,” says Jennifer McQuiston, an epidemiology team leader in the vector-borne disease division of the Centers for Disease Control and Prevention in Atlanta. “We’re told to get out and exercise and enjoy nature, so we need to be aware.” Most people have heard of Lyme disease, which appeared among residents of that town in Connecticut in the mid-1970s and now affects more than 35,000 Americans per year. Most Lyme cases occur in the Northeast and upper Midwest; if you don’t live there, you might be safe from Lyme but still at risk for other diseases. Cases of a tickborne illness known as ehrlichiosis grew from 200 to 957 nationwide—a 378 percent jump—between 2000 and 2008, according to the CDC. The infection anaplasmosis nearly tripled in the same period, and Rocky Mountain spotted fever quintupled. The new disease STARI (southern tick-associated rash illness) has spread across the South, and strains of an infection called rickettsiosis have hit the Gulf and Pacific coasts.

All of these non-Lyme tick diseases attack victims in a similar way, bringing on fever, headache, and muscle and joint pain—making it easy to misdiagnose them as anything from flu to meningitis, says [Gary P. Wormser, M.D., the chief of infectious diseases at Westchester Medical Center and New York Medical College and head of a team researching tick diseases]. If the patient remembers finding a tick, or develops a rash, that’s a big clue. If not, “it is somewhat common for these to be missed. The symptoms resemble so many other common viral infections,” says Gregory A. Storch, M.D., a pediatric infectious-disease specialist at Washington University in St. Louis, which created a multidisciplinary tickborne-disease research team because cases have surged there.

…[B]ecause medical awareness has not kept up, patients have been overlooked, undertreated and taken by surprise when their enjoyment of the outdoors—a hike, a run, a round of golf, their own backyard—turns into a life-altering threat.

Sometimes these infections can be transmitted by a tick bite at the same time as Lyme, making them what physicians and Lyme patients call “co-infections.” Sometimes they are mistaken for Lyme. Some of them require different drugs to treat, so if they are not diagnosed correctly, people will not be treated properly and the diseases can linger.

That’s especially important for one of them, babesiosis, because it is caused not by a bacterium but by a parasite that lives in red blood cells much as malaria does — in fact, one researcher described it to me as “American malaria.” Because many people don’t show obvious symptoms, babesiosis isn’t always detected and treated. As a result, it is spreading, both from women to their children prenatally, and also, troublingly, through the blood supply. Babesiosis is currently the No. 1 cause of infections transmitted through blood transfusion in the United States. Unlike other infections that are potentially passed by blood, such as HIV and West Nile virus, there is no test for babesiosis that blood banks can use.

In 2007, in a case that rang alarm bells, a cancer patient in California arrived at the hospital weak and throwing up blood. Tests revealed babesiosis: He had been infected by blood from a man who had donated in Maine, say Van P. Ngo and Rachel Civen, M.D., epidemiologists at the Los Angeles County Department of Health who investigated the case. The FDA has since reported that over the past 10 years, babesiosis has infected more than 100 Americans via transfusions—and 11 of them have died.

These are tiny numbers compared with the more than 5 million people who receive transfusions in the United States each year. But there are almost certainly more cases than there would be if blood banks could effectively check for the parasite. Right now, donors merely complete a questionnaire that asks whether they have had babesiosis or unexplained fever. In one study in Connecticut, 1 out of every 100 donors who passed that screening was shown to be potentially infectious.

These infections aren’t often deadly, but sometimes “deadly” isn’t the point: For many of the women (and men) who have had them, they are life-interrupting and sometimes life-changing, requiring tough drug treatment and long recovery times. A number of women who suffered from babesiosis and erlichiosis generously shared their stories with me, and two are featured in SELF. I hope you’ll take a look.

Flickr/MattAllworth/CC

Filed Under: Science, Science Blogs, Superbug Tagged With: babesiosis, Blood, CDC, FDA, Lyme, Science Blogs, ticks

The food safety bill and the long cost of foodborne illness

December 21, 2010 By Maryn Leave a Comment

In a nailbiter ending tonight, the US House of Representatives passed the long-stalled, almost-lost, back-from-the-dead FDA Food Safety Modernization Act, a decades-overdue piece of legislation that will equip the US Food and Drug Administration with enforcement tools to help it prevent and track foodborne illness outbreaks.

For people who don’t know the regulatory landscape of food in the United States, it comes as a shock that FDA (which regulates both drugs used in food production and much of the food produced in the US, except for meat and poultry which are under USDA) has so little power. Until now, the FDA could not compel a food recall; it could only ask for a problematic or dangerous food to be recalled, and the food producer could demur. That was, if the FDA even associated a particular food with a foodborne outbreak, which was unlikely given its lack of surveillance resources or inspectors. (A remarkable number of foodborne outbreaks are solved not by the feds but by the Minnesota Department of Public Health, which is well-funded by the state it represents.) The last time food-safety legislation was updated in the US was 1938. [Read more…]

Filed Under: Science, Science Blogs, Superbug Tagged With: CDC, E. coli, FDA, food, food policy, foodborne, legislation, Science Blogs

ResistanceMap and Get Smart About Antibiotics Week

November 19, 2010 By Maryn Leave a Comment

Among the many skills admired by journalists (always finding the free food; never going out of the office; yes, those are said in jest), skidding in just under deadline may be the most valued. I am making a flourish of that skill here, sliding in a mention of an important observance this week just as the week ends.

(Sorry. There was a lot of news this week.)

So: In case you hadn’t yet noticed, this is (was) Get Smart About Antibiotics Week, 2010.

The Get Smart week is co-sponsored by the CDC and the FDA, and its goal is to alert people to the continuing overuse of antibiotics in human medicine. (A separate but just as important issue as overuse of antibiotics on the farm, which I’ve talked about a number of times here.)

If you’re concerned about this — and who shouldn’t be — the CDC’s sites have a plethora of information about this crucial issue. There are briefings, posters, brochures, radio and TV PSAs, a blog by federal researchers and others and — possibly the most directly useful to parents in the whole campaign — a form letter that doctors can download and fill out to give to working parents, explaining why a child with a sniffle or a sore ear can be admitted to daycare without an antibiotic prescription. [Read more…]

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

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