Title |
Vital Signs: Containment of Novel Multidrug-Resistant Organisms and Resistance Mechanisms — United States, 2006–2017
|
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Published in |
MMWR: Morbidity & Mortality Weekly Report, April 2018
|
DOI | 10.15585/mmwr.mm6713e1 |
Pubmed ID | |
Authors |
Kate Russell Woodworth, Maroya Spalding Walters, Lindsey M. Weiner, Jonathan Edwards, Allison C. Brown, Jennifer Y. Huang, Sarah Malik, Rachel B. Slayton, Prabasaj Paul, Catherine Capers, Marion A. Kainer, Nancy Wilde, Alicia Shugart, Garrett Mahon, Alexander J. Kallen, Jean Patel, L. Clifford McDonald, Arjun Srinivasan, Michael Craig, Denise M. Cardo |
Abstract |
Approaches to controlling emerging antibiotic resistance in health care settings have evolved over time. When resistance to broad-spectrum antimicrobials mediated by extended-spectrum β-lactamases (ESBLs) arose in the 1980s, targeted interventions to slow spread were not widely promoted. However, when Enterobacteriaceae with carbapenemases that confer resistance to carbapenem antibiotics emerged, directed control efforts were recommended. These distinct approaches could have resulted in differences in spread of these two pathogens. CDC evaluated these possible changes along with initial findings of an enhanced antibiotic resistance detection and control strategy that builds on interventions developed to control carbapenem resistance. Infection data from the National Healthcare Safety Network from 2006-2015 were analyzed to calculate changes in the annual proportion of selected pathogens that were nonsusceptible to extended-spectrum cephalosporins (ESBL phenotype) or resistant to carbapenems (carbapenem-resistant Enterobacteriaceae [CRE]). Testing results for CRE and carbapenem-resistant Pseudomonas aeruginosa (CRPA) are also reported. The percentage of ESBL phenotype Enterobacteriaceae decreased by 2% per year (risk ratio [RR] = 0.98, p<0.001); by comparison, the CRE percentage decreased by 15% per year (RR = 0.85, p<0.01). From January to September 2017, carbapenemase testing was performed for 4,442 CRE and 1,334 CRPA isolates; 32% and 1.9%, respectively, were carbapenemase producers. In response, 1,489 screening tests were performed to identify asymptomatic carriers; 171 (11%) were positive. The proportion of Enterobacteriaceae infections that were CRE remained lower and decreased more over time than the proportion that were ESBL phenotype. This difference might be explained by the more directed control efforts implemented to slow transmission of CRE than those applied for ESBL-producing strains. Increased detection and aggressive early response to emerging antibiotic resistance threats have the potential to slow further spread. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 31 | 38% |
South Africa | 7 | 9% |
Canada | 5 | 6% |
France | 2 | 2% |
Japan | 2 | 2% |
Mauritius | 1 | 1% |
United Kingdom | 1 | 1% |
Australia | 1 | 1% |
Spain | 1 | 1% |
Other | 0 | 0% |
Unknown | 30 | 37% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 48 | 59% |
Practitioners (doctors, other healthcare professionals) | 19 | 23% |
Scientists | 11 | 14% |
Science communicators (journalists, bloggers, editors) | 3 | 4% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 95 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 15 | 16% |
Student > Master | 9 | 9% |
Student > Ph. D. Student | 8 | 8% |
Student > Bachelor | 8 | 8% |
Other | 7 | 7% |
Other | 20 | 21% |
Unknown | 28 | 29% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 28 | 29% |
Biochemistry, Genetics and Molecular Biology | 9 | 9% |
Agricultural and Biological Sciences | 7 | 7% |
Immunology and Microbiology | 5 | 5% |
Veterinary Science and Veterinary Medicine | 4 | 4% |
Other | 12 | 13% |
Unknown | 30 | 32% |