Antibiotic resistance: international news

Constant readers, we've often talked about MRSA and other resistant pathogens as a global problem (cf. these posts for resistance issues in Europe and these for resistance around the world).

But now there has been formal recognition that resistant bacteria respect no borders. On Nov. 3, the US government and the European Union signed an agreement to form a joint task force to investigate and combat antibiotic resistance. From the Joint Declaration, posted on WhiteHouse.gov:

[We therefore agree}... To establish a transatlantic task force on urgent antimicrobial resistance issues focused on appropriate therapeutic use of antimicrobial drugs in the medical and veterinary communities, prevention of both healthcare- and community-associated drug-resistant infections, and strategies for improving the pipeline of new antimicrobial drugs, which could be better addressed by intensified cooperation between us.

You may not have heard much about it here, but in Europe, this declaration was big news. Here's a story from the Swedish newspaper Arbetarbladet (Sweden currently holds the EU Presidency) and another from the Irish Times. But while it merited barely a blink in the US mainstream media, US nonprofits were deeply involved in the declaration, notably the Infectious Diseases Society of America and the Pew Charitable Trusts:

"Antimicrobial resistance and the lack of new antimicrobial agents to effectively treat resistant infections are problems that no country can deal with alone -- they threaten the very foundation of medical care," said Richard Whitley, MD, FIDSA, president of the Infectious Diseases Society of America (IDSA). "Without effective antimicrobial drugs, modern medical treatments such as operations, transplants, intensive care, cancer treatment and care of premature babies will become very risky if not impossible." Dr. Whitley joined with Javier Garau, MD, president of European Society of Clinical Microbiology and Infectious Diseases (ESCMID) and Shelley A. Hearne, managing director of the Pew Health Group in welcoming the multi-country initiative.
..."Antibiotic resistant bacteria respect no political borders, so we must work together to combat them," Dr. Hearne said. "Resistance takes a terrible toll on health worldwide and is measured in lives lost, greater suffering and higher health care costs. One way that U.S. leaders can demonstrate their commitment to solving this issue is by immediately joining the EU in banning non-judicious antibiotic uses in food animal production." (Pew press release)

This fresh focus on the problem of resistance will be sharpened in Europe this week with the celebration of European Antibiotic Awareness Day. (We should be so lucky.) More on that on Wednesday.

Antibiotic-resistant infections: millions in cost to hospitals, families, all of us

Folks, I mentioned that I'm way behind in working down a stack of great articles. Here's a very good one that I missed when it came out two weeks ago and is well worth your time.

A team from John H. Stroger Hospital (the new location of the iconic Cook County Hospital, public hospital for downtown Chicago) and from the Alliance for the Prudent Use of Antibiotics at Tufts University (headed by Dr. Stuart Levy, dean of antibiotic resistance scholarship in the US) has analyzed the direct and distributed costs of resistant infections, and their results are stunning. They took a random sample of patients seen at the hospital, sorted out a subgroup that suffered from resistant infections, and computed the costs that those infections imposed: in medical costs, increased length of stay, and excess deaths. Those sort of calculations have been done before at other institutions (cf. for instance the excellent work of Susan Cosgrove of Johns Hopkins), but what makes this Chicago study striking is an additional layer of analysis that computes the "social cost" to the families of those infected.

In the study's words:

In a sample of 1391 patients, 188 (13.5%) had [antibiotic-resistant infections]. The medical costs attributable to ARI ranged from $18,588 to $29,069 per patient in the sensitivity analysis. Excess duration of hospital stay was 6.4–12.7 days, and attributable mortality was 6.5%. The societal costs were $10.7–$15.0 million.

(Just to underline: These are almost certainly underestimates of the current problem and its current costs — because to get very solid data, the Stroger team went back in their database to patients who were treated in 2000. That's before the emergence and dominance of CA-MRSA USA300 nationwide, and its subsequent movement into hospitals. Since 2000, the MRSA epidemic has gotten worse.)

An accompanying editorial takes the next step in logic, stressing that if we're not going to work to reduce ARIs because it is good medicine to do so, we should do it because it is critically cost-saving:

...[T]he findings of Roberts et al [11] are significant, making a strong case for both the medical and financial benefits of reducing antimicrobial resistance. This is an important and timely question, considering the national focus on the prevention of health care–acquired infections, a significant proportion of which are caused by antimicrobial-resistant organisms, and the call for institutions to develop antimicrobial stewardship programs. These data should help inform decisions regarding the structure and implementation of health care initiatives designed to improve patient care while controlling unnecessary costs.

The cite for the study is: Rebecca R. Roberts, Bala Hota, Ibrar Ahmad et al. Hospital and Societal Costs of Antimicrobial‐Resistant Infections in a Chicago Teaching Hospital: Implications for Antibiotic Stewardship. Clinical Infectious Diseases 2009 49:8, 1175-1184.

It's World Pneumonia Day

Readers, we talk all the time here about the unexpected and deadly attack of MRSA pneumonia, both on its own and as a sequela of influenza infection. But we should acknowledge that MRSA pneumonia is part of an epidemic of pneumonia, an under-appreciated disease of severe lung inflammation that takes the lives of 2 million children each year around the world.

Today, Nov. 2, has been declared World Pneumonia Day by an enormous coalition of global health organizations that includes UNICEF and Save the Children. (Mis amigos Latinos sabrán que está hoy también Dia de los Muertos. Fitting, no?) From their press release: "Pneumonia takes the lives of more children under 5 than measles, malaria and AIDS combined. The disease takes the life of one child every 15 seconds, and accounts for 20% of all deaths of children under 5 worldwide."

World Pneumonia Day is being marked by events around the globe (here's a clickable map) and by the release of a World Health Organization report, the Global Action Plan for Prevention and Control of Pneumonia. The plan has three main goals, aimed at the recourse-poor countries where most pneumonia deaths occur:

• promote breastfeeding to ensure children's nutrition and good immune status
• protect immunity by guaranteeing the distribution in the developing world of the pneumonia vaccines we take for granted in the industrialized world, against Haemophilus influenzae and Strep pneumoniae (pneumococcus)
• treat children when they need it by making sure that there is adequate, local primary care and — important for our purposes especially — also making sure that antibiotics are used appropriately, but not overused.

The international organization GAVI (formerly known as the Global Alliance for Vaccines and Immunization, now going just by its acronym) has announced plans to immunize 130 million children worldwide against pneumonia and other diseases by 2015.

I want to underline that pneumonia is of interest to us for several reasons: not just because we are concerned for MRSA pneumonia, but also because we are in the midst of the H1N1 pandemic, and as we have talked about before, bacterial infections appear to be playing a role in a significant percentage of the deaths. There is no MRSA vaccine, but there are Hib and pneumo vaccines, which might have prevented some of those deaths. So increasing the administration of pneumonia vaccines could affect the course of this pandemic right now, as well as the fates of children all over the world who have not contracted this flu but will be in danger of bacterial pneumonia in the future.

New reports on animals, food, MRSA ST398

Well, constant readers, didn't expect to be gone *that* long. Many apologies. There was a good reason — actually, several: I attended a journalism meeting, and spoke at a second meeting. But most important, I received, marked up, and returned the galleys of SUPERBUG. Yes, it's really starting to look like a book now. There will be things to share, soon.

Meanwhile, I'll try to roll out some of the many, many pieces of news and research related to staph that have emerged in the past few weeks. Today: News on animals, and our old opponent, MRSA ST398.

First: A team from the Universidad de La Rioja reports in the Journal of Antimicrobial Chemistry the first finding of MRSA ST398 ("pig MRSA," archive here) in food in Spain. They tested 318 raw meat and wild-game samples (chicken, pork, veal, lamb, turkey, rabbit, game bird, wild boar, deer, hare) and found ST398 and other MRSA strains in 5 of them, an incidence of 1.6%. The authors write: "Although MRSA prevalence in raw food is low, the risk of its transmission through the food chain cannot be disregarded."

Importantly, one of the other strains found in the meat of these animals is an uncommon variant, ST125-t067, that has already been implicated in large numbers of hospital infections in Spain and is resistant to ciprofloxacin (Cipro), erythromycin and a third antibiotic, tobramycin, in addition to the usual suspects. The other non-ST398 strain is ST217, which is a variant of a long-known hospital strain, and is also resistant to Cipro, a very valuable drug for skin and soft-tissue infections. So it appears the contamination may cross both ways, from animals, and to animals as well.

No link, but the cite is: Lozano, Carmen, et al. Detection of methicillin-resistant Staphylococcus aureus ST398 n food samples of animal origin in Spain. Journal of Antimicrobial Chemistry. e-pub Oct. 21 2009 AOP doi:10.1093/jac/dkp378

Next: If the prevalence of ST398 is so low in food, why do we care? We care because of where those organisms go next — into hospitals, among other places. A Dutch/German team that includes the original identifier of ST398 in humans are reporting that they have found an association between the density of pig-farming in parts of Germany and the probability that patients admitted to hospitals will be carrying ST398 with them, creating a possible source for nosocomial infections. R. Kock and colleagues screened 1,600 pigs on 40 German farms, and also reviewed screening results for every MRSA-positive patient admitted to the University Hospital-Munster from 2005 through 2008. They found ST398 on 70% of the farms, and also found that ST398 represented 15% of the MRSA isolates at the hospital in 2005, rising to 22.4% in 2008. The key association: The patients carrying St398 were more likely to have contact with pigs in their daily lives, and also with cattle, than patients who had other forms of MRSA or no MRSA at all.

The cite for that paper: Kock, R. et al. Prevalence and molecular characteristics of methicillin-resistant Staphylococcus aureus (MRSA) among pigs on German farms and import of livestock-related MRSA into hospitals. European Journal of Clinical Microbiology and Infectious Diseases, e-pub Aug 25, 2009. DOI 10.1007/s10096-009-0795-4

And finally: How do you stop the evolution and spread of antibiotic-resistant organisms in livestock? One good way is to stop giving teh livestock antibiotics in the first place. In a column at the Huffington Post, Laura Rogers, project director of the Pew Campaign on Human Health and Industrial Farming, takes on the oft-repeated assertion that you can't farm without them without risking the lives and market place of your livestock, and offers the example of Denmark, which did ban antibiotics in animals, and which has healthier, more profitable livestock as a result:

American agribusiness often has criticized Denmark's 1998 ban on antibiotics, calling it an outright failure. But compelling new research presented by a Danish scientist earlier this year showed the opposite, revealing that antibiotic use on industrial farms has dropped by half while productivity has increased by 47 percent since 1992. Danish swine production has increased from 18.4 million in 1992 to 27.1 million in 2008. A decrease in antibiotic-resistant bacteria in food animals and meat has followed the reduced use of these vital drugs.

Read more at: http://www.huffingtonpost.com/laura-rogers/what-can-danish-hogs-teac_b_318478.html

Get Smart About Antibiotics Week, Oct. 5-11 (now!)

Every year, the CDC sponsors a week-long observance called Get Smart About Antibiotics Week, intended to bring attention to this issue of antibiotic misuse that all of us here are so concerned about, and to link the efforts of federal and state agencies, nonprofit groups, and anyone else with an interest.

Today marks the start of the 2009 week, and of course it comes as a crucial time: With the H1N1 flu pandemic causing so many people to seek care for upper respiratory illnesses, the possibility of antibiotics being misprescribed for a viral illness is greater than usual.

The homepage for the CDC campaign is here. There is an abundant list of materials, images, campaign strategies and suggestions for framing the conversation, along with graphics (I've lifted the one at left from a poster aimed at parents of young children), PSA sound files, and cute little web widgets such as the image at right above (sorry for the poor layout skills, it's a busy morning).

Since this comes from the CDC and is therefore taxpayer-funded, all of it is open-access. So go, already.

A reminder: It's World MRSA Day

SUPERBUG listed among "50 Excellent Public Health Blogs"

Constant readers, I'm thrilled to let you know that SUPERBUG has been chosen one of "50 Excellent Public Health Blogs" by the nursing website RNCentral.com.

We are in extremely flattering company. Also among their choices are:

• Effect Measure, the premier public-health blog, now the go-to place for analyses of public responses to pandemic flu
• the Pump Handle, on public and occupational health
• the New Health Dialogue, on health-care reform, whose writers include my friend and former Kaiser Foundation co-fellow Joanne Kenen,
• Covering Health, the blog of the Association of Health Care Journalists, where I am a board member
• Schwitzer Health News, the journalism-quality blog of Gary Schwitzer, University of Minnesota professor and founder of Health News Review
• Barf Blog, written by food-safety experts at Kansas State University and North Carolina State University

along with many others that are new to me and that I look forward to checking out. I urge you to do the same.