Division of Healthcare Quality Promotion, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
We analyzed data from the National Nosocomial Infections Surveillance (NNIS) System from 1986–2003 to determine the epidemiology of gram‐negative bacilli in intensive care units (ICUs) for the most frequent types of hospital‐acquired infection: pneumonia, surgical site infection (SSI), urinary tract infection (UTI), and bloodstream infection (BSI). We analyzed >410,000 bacterial isolates associated with hospital‐acquired infections in ICUs during 1986–2003. In 2003, gram‐negative bacilli were associated with 23.8% of BSIs, 65.2% of pneumonia episodes, 33.8% of SSIs, and 71.1% of UTIs. The percentage of BSIs associated with gram‐negative bacilli decreased from 33.2% in 1986 to 23.8% in 2003. The percentage of SSIs associated with gram‐negative bacilli decreased from 56.5% in 1986 to 33.8% in 2003. The percentages pneumonia episodes and UTIs associated with gram‐negative bacilli remained constant during the study period. The proportion of ICU pneumonia episodes associated with Acinetobacter species increased from 4% in 1986 to 7.0% in 2003 (
, by the Cochran‐Armitage χ2 test for trend). Significant increases in resistance rates were uniformly seen for selected antimicrobial‐pathogen combinations. Gram‐negative bacilli are commonly associated with hospital‐acquired infections in ICUs. The proportion of Acinetobacter species associated with ICU pneumonia increased from 4% in 1986 to 7.0% in 2003.
Cited by
J. L. Martinez. (2009) The role of natural environments in the evolution of resistance traits in pathogenic bacteria.
Proceedings of the Royal Society B: Biological Sciences 276:1667, 2521-2530
Online publication date: 22-Aug-2009.
CrossRef Kathryn J. Eagye, MPH; Joseph L. Kuti, PharmD; David P. Nicolau, PharmD, FCCP, FIDSA. (2009) Risk Factors and Outcomes Associated with Isolation of Meropenem High‐Level–Resistant
Pseudomonas aeruginosa •

.
Infection Control and Hospital Epidemiology 30:8, 746-752
Online publication date: 1-Aug-2009.
Daniel J. Kao, Robert S. Hodges. (2009) Advantages of a Synthetic Peptide Immunogen Over a Protein Immunogen in the Development of an Anti-Pilus Vaccine for
Pseudomonas aeruginosa.
Chemical Biology & Drug Design 74:1, 33-42
Online publication date: 1-Aug-2009.
CrossRef M. N. Al-Hasan, B. D. Lahr, J. E. Eckel-Passow, L. M. Baddour. (2009) Antimicrobial resistance trends of Escherichia coli bloodstream isolates: a population-based study, 1998-2007.
Journal of Antimicrobial Chemotherapy 64:1, 169-174
Online publication date: 1-Aug-2009.
CrossRef U. Garza-Ramos, G. Davila, V. Gonzalez, C. Alpuche-Aranda, V. R. López-Collada, D. Alcantar-Curiel, O. Newton, J. Silva-Sanchez. (2009) The
bla
SHV-5
gene is encoded in a compound transposon duplicated in tandem in
Enterobacter cloacae.
Clinical Microbiology and Infection Online publication date: 1-Jul-2009.
CrossRef M. PRATIKAKI, E. PLATSOUKA, C. SOTIROPOULOU, T. VASSILAKOPOULOS, O. PANIARA, C. ROUSSOS, C. ROUTSI. (2009) Risk factors for and influence of bloodstream infections on mortality: a 1-year prospective study in a Greek intensive-care unit.
Epidemiology and Infection 137:05, 727
Online publication date: 1-Jun-2009.
CrossRef Christoph K. Naber, Larry M. Baddour, Evangelos J. Giamarellos‐Bourboulis, Ian M. Gould, Mathias Herrmann, Bruno Hoen, Adolf W. Karchmer, Yoshio Kobayashi, Roman S. Kozlov, Daniel Lew, José M. Miró, Robert C. Moellering, Jr., Philippe Moreillon, Georg Peters, Ethan Rubinstein, Harald Seifert, and G. Ralph Corey. (2009) Clinical Consensus Conference: Survey on Gram‐Positive Bloodstream Infections with a Focus on
Staphylococcus aureus.
Clinical Infectious Diseases 48:s4, S260-S270
Online publication date: 15-May-2009.
Jane V. Trinh, MD; Luke F. Chen, MBBS; Daniel J. Sexton, MD; Deverick J. Anderson, MD. (2009) Risk Factors for Gram‐Negative Bacterial Surgical Site Infection: Do Allergies to Antibiotics Increase Risk? •

.
Infection Control and Hospital Epidemiology 30:5, 440-446
Online publication date: 1-May-2009.
R. Naesens, J. P. Ursi, J. Schaeren, A. Jeurissen. (2009) In vitro activity of tigecycline against multidrug-resistant Enterobacteriaceae isolates from a Belgian hospital.
European Journal of Clinical Microbiology & Infectious Diseases 28:4, 381-384
Online publication date: 1-May-2009.
CrossRef Andrew F. Shorr. (2009) Review of studies of the impact on Gram-negative bacterial resistance on outcomes in the intensive care unit*.
Critical Care Medicine 37:4, 1463-1469
Online publication date: 1-May-2009.
CrossRef Vered Schechner, Vandack Nobre, Keith S. Kaye, Moshe Leshno, Michael Giladi, Peter Rohner, Stephan Harbarth, Deverick J. Anderson, Adolf W. Karchmer, Mitchell J. Schwaber, and Yehuda Carmeli. (2009) Gram‐Negative Bacteremia upon Hospital Admission: When Should
Pseudomonas aeruginosa Be Suspected?.
Clinical Infectious Diseases 48:5, 580-586
Online publication date: 1-Mar-2009.
Rupali K. Doshi, Gopi Patel, Richard MacKay, Frances Wallach. (2009) Healthcare-associated Infections: Epidemiology, Prevention, and Therapy.
Mount Sinai Journal of Medicine: A Journal of Translational and Personalized Medicine 76:1, 84-94
Online publication date: 1-Mar-2009.
CrossRef Thomas A. Russo, Ulrike MacDonald, Janet M. Beanan, Ruth Olson, Ian J. MacDonald, Shauna L. Sauberan, Nicole R. Luke, L. Wayne Schultz,, and Timothy C. Umland. (2009) Penicillin‐Binding Protein 7/8 Contributes to the Survival of
Acinetobacter baumannii In Vitro and In Vivo.
The Journal of Infectious Diseases 199:4, 513-521
Online publication date: 15-Feb-2009.
Matteo Bassetti, Elda Righi, Silvano Esposito, Nicola Petrosillo, Laura Nicolini. (2009) Drug treatment for multidrug-resistant
Acinetobacter baumannii
infections.
Future Microbiology 3:6, 649-660
Online publication date: 1-Jan-2009.
CrossRef Andrea Endimiani, Federico Perez, Robert A Bonomo. (2009) Cefepime: a reappraisal in an era of increasing antimicrobial resistance.
Expert Review of Anti-infective Therapy 6:6, 805-824
Online publication date: 1-Jan-2009.
CrossRef D. G. Dauner, J. R. May, J. C. H. Steele. (2008) Assessing antibiotic therapy for Acinetobacter baumannii infections in an academic medical center.
European Journal of Clinical Microbiology & Infectious Diseases 27:11, 1021-1024
Online publication date: 1-Dec-2008.
CrossRef Matthew Dryden. (2008) Complicated Skin and Soft Tissue Infections Caused by Methicillin-Resistant
Staphylococcus aureus
: Epidemiology, Risk Factors, and Presentation.
Surgical Infections 9:s1, s3-s10
Online publication date: 1-Nov-2008.
CrossRef R. Monina Klevens, Jonathan R. Edwards, and R. P. Gaynes, for the National Nosocomial Infections Surveillance System. (2008) The Impact of Antimicrobial‐Resistant, Health Care–Associated Infections on Mortality in the United States.
Clinical Infectious Diseases 47:7, 927-930
Online publication date: 1-Oct-2008.
Marin H. Kollef, Lena M. Napolitano, Joseph S. Solomkin, Richard G. Wunderink, In‐Gyu Bae, Vance G. Fowler, Robert A. Balk, Dennis L. Stevens, James J. Rahal, Andrew F. Shorr, Peter K. Linden, and Scott T. Micek. (2008) Health Care–Associated Infection (HAI): A Critical Appraisal of the Emerging Threat—Proceedings of the HAI Summit.
Clinical Infectious Diseases 47:s2, S55-S99
Online publication date: 1-Oct-2008.
Richard J. Wall, E. Wesley Ely, Thomas R. Talbot, Matthew B. Weinger, Mark V. Williams, Joan Reischel, L. Hayley Burgess, Jane Englebright, Robert. S. Dittus, Theodore Speroff, Jayant K. Deshpande. (2008) Evidence-based algorithms for diagnosing and treating ventilator-associated pneumonia.
Journal of Hospital Medicine 3:5, 409-422
Online publication date: 1-Oct-2008.
CrossRef M. E. FALAGAS, E. A. KARVELI, I. I. SIEMPOS, K. Z. VARDAKAS. (2008) Acinetobacter infections: a growing threat for critically ill patients.
Epidemiology and Infection 136:08,
Online publication date: 1-Sep-2008.
CrossRef Andreas M Lenz, Mark Fairweather, William G Cheadle. (2008) Resistance profiles in surgical-site infection.
Future Microbiology 3:4, 453-462
Online publication date: 1-Sep-2008.
CrossRef Charles R. Woods, Kristina A. Bryant. (2008) Healthcare-Acquired Infections Due to Gram-Negative Bacteria.
The Pediatric Infectious Disease Journal 27:5, 453-454
Online publication date: 1-Jun-2008.
CrossRef Vincent H. Tam, Eric A. Gamez, Jaye S. Weston, Laura N. Gerard, Mark T. LaRocco, Juan Pablo Caeiro, Layne O. Gentry, and Kevin W. Garey. (2008) Outcomes of Bacteremia due to
Pseudomonas aeruginosa with Reduced Susceptibility to Piperacillin‐Tazobactam: Implications on the Appropriateness of the Resistance Breakpoint.
Clinical Infectious Diseases 46:6, 862-867
Online publication date: 15-Mar-2008.
Anthony M Nicasio, Joseph L Kuti, David P Nicolau. (2008) The Current State of Multidrug-Resistant Gram-Negative Bacilli in North America.
Pharmacotherapy 28:2, 235-249
Online publication date: 1-Mar-2008.
CrossRef Deborah C. Draghi, Stacy Tench, Michael J. Dowzicky, Daniel F. Sahm. (2008) Baseline in vitro Activity of Tigecycline among Key Bacterial Pathogens Exhibiting Multidrug Resistance.
Chemotherapy 54:2, 91-100
Online publication date: 1-Feb-2008.
CrossRef David B. Blossom, Arjun Srinivasan. (2008) Drug-Resistant Acinetobacter baumannii-calcoaceticus Complex.
Infectious Diseases in Clinical Practice 16:1, 1-3
Online publication date: 1-Feb-2008.
CrossRef A. Kohlenberg, F. Schwab, C. Geffers, M. Behnke, H. Rüden, P. Gastmeier. (2008) Time-trends for Gram-negative and multidrug-resistant Gram-positive bacteria associated with nosocomial infections in German intensive care units between 2000 and 2005.
Clinical Microbiology and Infection 14:1, 93-96
Online publication date: 1-Feb-2008.
CrossRef Shana C. Segal, Theoklis E. Zaoutis, Jessica Kagen, Samir S. Shah. (2007) Epidemiology of and Risk Factors for Acinetobacter Species Bloodstream Infection in Children.
The Pediatric Infectious Disease Journal 26:10, 920-926
Online publication date: 1-Nov-2007.
CrossRef (2007) Empfehlung zur Prävention nosokomialer Infektionen bei neonatologischen Intensivpflegepatienten mit einem Geburtsgewicht unter 1500 g.
Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz 50:10, 1265-1303
Online publication date: 1-Nov-2007.
CrossRef P. Hawkey, R. Finch. (2007) Tigecycline: in-vitro performance as a predictor of clinical efficacy.
Clinical Microbiology and Infection 13:4, 354-362
Online publication date: 1-May-2007.
CrossRef V. H. Tam, A. N. Schilling, M. T. LaRocco, L. O. Gentry, K. Lolans, J. P. Quinn, K. W. Garey. (2007) Prevalence of AmpC over-expression in bloodstream isolates of Pseudomonas aeruginosa.
Clinical Microbiology and Infection 13:4, 413-418
Online publication date: 1-May-2007.
CrossRef M. E. Falagas, E. A. Karveli. (2007) The changing global epidemiology of Acinetobacter baumannii infections: a development with major public health implications.
Clinical Microbiology and Infection 13:2,
Online publication date: 1-Mar-2007.
CrossRef Eli N Deal, Scott T Micek, David J Ritchie, Richard M Reichley, W. Michael Dunne, Marin H Kollef. (2007) Predictors of In-Hospital Mortality for Bloodstream Infections Caused by
Enterobacter Species or
Citrobacter freundii.
Pharmacotherapy 27:2, 191-199
Online publication date: 1-Mar-2007.
CrossRef Marin H. Kollef. (2007)
Editorial Commentary: Moving Towards Real‐Time Antimicrobial Management of Ventilator‐Associated Pneumonia.
Clinical Infectious Diseases 44:3, 388-390
Online publication date: 1-Feb-2007.
Michael S Niederman. (2006) De-escalation therapy in ventilator-associated pneumonia.
Current Opinion in Critical Care 12:5, 452???457
Online publication date: 1-Nov-2006.
CrossRef M. Holub, D. A. Lawrence, T. K. Mondal. (2006) Effects of murine endotoxemia on lymphocyte subsets and clearance of staphylococcal pulmonary infection.
Folia Microbiologica 51:5, 469-472
Online publication date: 1-Oct-2006.
CrossRef Anthony D. Harris, Jessina C. McGregor, and Jon P. Furuno. (2006) What Infection Control Interventions Should Be Undertaken to Control Multidrug‐Resistant Gram‐Negative Bacteria?.
Clinical Infectious Diseases 43:s2, S57-S61
Online publication date: 1-Sep-2006.
Robert A. Bonomo and Dora Szabo. (2006) Mechanisms of Multidrug Resistance in
Acinetobacter Species and
Pseudomonas aeruginosa.
Clinical Infectious Diseases 43:s2, S49-S56
Online publication date: 1-Sep-2006.
Uwe Ostendorf, Santiago Ewig, Antoni Torres. (2006) Nosocomial pneumonia.
Current Opinion in Infectious Diseases 19:4, 327???338
Online publication date: 1-Sep-2006.
CrossRef Despoina Koulenti, Jordi Rello. (2006) Gram-negative bacterial pneumonia: aetiology and management.
Current Opinion in Pulmonary Medicine 12:3, 198???204
Online publication date: 1-Jun-2006.
CrossRef George H. Talbot, John Bradley, John E. Edwards, Jr., David Gilbert, Michael Scheld, and John G. Bartlett. (2006) Bad Bugs Need Drugs: An Update on the Development Pipeline from the Antimicrobial Availability Task Force of the Infectious Diseases Society of America.
Clinical Infectious Diseases 42:5, 657-668
Online publication date: 1-Mar-2006.
Sean M Bagshaw, Kevin B Laupland. (2006) Epidemiology of intensive care unit-acquired urinary tract infections.
Current Opinion in Infectious Diseases 19:1, 67???71
Online publication date: 1-Mar-2006.
CrossRef James T. Lee. (2006) Gram‐Negative Bacterial Surgical Site Infection and Intensive Care Unit Patients.
Clinical Infectious Diseases 42:4, 577-578
Online publication date: 15-Feb-2006.
Robert Gaynes. (2006) Reply to Lee.
Clinical Infectious Diseases 42:4, 578-578
Online publication date: 15-Feb-2006.
Paolo Grossi, Daniela Dalla Gasperina. (2006) Treatment of <i>Pseudomonas aeruginosa</i> infection in critically ill patients.
Expert Review of Anti-infective Therapy 4:4, 639
CrossRef