NHSN Reports

This page contains surveillance reports published by CDC using data from the National Healthcare Safety Network (NHSN). Reports are organized by topic, and include summaries of healthcare-associated infections, antimicrobial use and resistance, healthcare personnel influenza vaccination rates, and dialysis events.

NHSN recognizes that changes to the Centers for Medicare and Medicaid Services (CMS) payment policies and changes in state and local reporting mandates may impact the number and characteristics of healthcare facilities participating in NHSN.

Healthcare-associated Infections in the United States, 2006-2016: A Story of Progress
CDC uses NHSN, EIP, and HAI prevalence survey data to examine the nation’s progress in preventing five of the most common infections: Central line-associated bloodstream infections (CLABSIs), catheter-associated urinary tract infections (CAUTIs), select surgical site infections (SSIs), hospital-onset Clostridioides difficile infections (CDI), and hospital-onset methicillin-resistant Staphylococcus aureus (MRSA) bacteremia (bloodstream infections).

The standardized infection ratio (SIR) is a metric used to track HAIs. It compares the number of observed infections to the number of predicted infections, based on a national baseline. More information can be found in the NHSN’s Guide to the SIR pdf icon[PDF – 3 MB].

2019 Data

2018 Data

2017 Data

2016 Data

2015 Data

SIR Report Under the 2015 Baseline
SIRs are calculated using the updated national 2015 baseline. To coincide with the new, five-year (2015-2020) goals stated in the HAI Action Plan, the 2015 baseline will be used for all HAI measures beginning with data reported to NHSN in 2015.
National SIRs on the Historical Baselines
CDC reviews and provides in-depth details about infection definition changes within NHSN that impacted data during that time period.

2014 Data

2013 Data

2012 Data

2011 Data

2011 Report pdf icon[PDF – 1 MB]

2010 Data

2010 Report pdf icon[PDF – 1 MB]

2009 Data

2015-2017 Adult Data

2015-2017 Adult Reportexternal icon

Describes antimicrobial resistance patterns and common pathogens for healthcare-associated infections (HAIs) reported to NHSN from adult patient populations. Results are presented for various healthcare facility types, location types, and surgical procedure categories.

Supplemental Data:

2015-2017 Pediatric Data

2015-2017 Pediatric Reportexternal icon

Describes antimicrobial resistance patterns and common pathogens for healthcare-associated infections (HAIs) reported to NHSN from pediatric patient populations.

Supplemental Data:

2011-2014 Pediatric Data

2011-2014 Reportexternal icon
Describes antimicrobial resistance patterns and common pathogens for healthcare-associated infections (HAIs) among pediatric patients reported to the National Healthcare Safety Network (NHSN) during 2011-2014.

2011-2014 All Data (all ages)

2011-2014 Report pdf icon[PDF – 1 MB]
Describes antimicrobial resistance patterns and common pathogens for healthcare-associated infections (HAIs) reported to the National Healthcare Safety Network (NHSN) during 2011-2014. Infect Control Hosp Epidemiol. 2016; 1-14. Published online: 2016 Aug 30.DOI: http://dx.doi.org/10.1017/ice.2016.174external icon
2011-2014 Data Tables excel icon[XLS – 100 KB]
Appendix: Distribution of All Pathogens Reported to NHSN excel icon[XLS – 100 KB]

2009-2010 Data

2009-2010 Report and Data Tablesexternal icon
Describes antimicrobial resistance patterns for healthcare-associated infections (HAIs) reported to the National Healthcare Safety Network (NHSN) during 2009-2010, Infect Control Hosp Epidemilol. 2013 Jan; 34(1):1-14. doi: 10.1086/668770. Epub 2012 Nov 27.

2006-2007 Data

2006-2007 Report and Data Tables pdf icon[PDF – 1 MB]
Describes the scope and magnitude of select antimicrobial-resistant pathogens among infections reported to the device-and procedure-associated modules of the NHSN, Infect Control Hosp Epidemiol 2008; 29:996-1011.

2019 Data

2017 Adult and Pediatric SAAR Baseline

NHSN Standardized Antimicrobial Administration Ratios (SAARs): A Progress Report and Risk Modeling Update Using 2017 Dataexternal icon

Historical 2014 Baseline

The Standardized Antimicrobial Administration Ratio: A New Metric for Measuring and Comparing Antibiotic Useexternal icon

Hospital Microbiology Laboratory Practices for Enterobacteriaceae – Findings from the 2015 and 2016 NHSN Annual Surveyexternal icon
Data from the 2015 and 2016 NHSN annual hospital surveys are used to describe laboratory testing practices in US short-stay acute care hospitals.
Antibiotic Stewardship Programs in US Acute Care Hospitals; Findings from the 2014 NHSN Annual Surveyexternal icon
Data from the 2014 NHSN annual hospital survey are used to describe the extent of antibiotic stewardship programs as defined by CDC’s Core Elements.
Policies for Controlling Multidrug-Resistant Organisms in US Healthcare Facilities Reporting to NHSN, 2014external icon
Data from the 2014 NHSN annual surveys are used to describe the policies in US healthcare facilities for controlling multidrug-resistant organisms.

2013 Data

2013 Reportexternal icon
Summary of Device-associated (DA) Module data collected by hospitals participating in the National Healthcare Safety Network (NHSN) for events occurring from January through December 2013 and reported to the Centers for Disease Control and Prevention (CDC) by June 1, 2014.
2013 Data Tables excel icon[XLS – 200 KB]
A read-only .xls version of the data tables published in the NHSN Annual Report: data summary for 2013, Device-associated Module, Am J Infect Control 2015;43:206-21.

2012 Data

2012 Report pdf icon[PDF – 1 MB]
Summary of Device-associated (DA) Module data collected by hospitals participating in the National Healthcare Safety Network (NHSN) for events occurring from January through December 2012 and reported to the Centers for Disease Control and Prevention (CDC) by July 1, 2013.
2012 Data Tables excel icon[XLS – 200 KB]
A read-only .xls version of the data tables published in the NHSN Annual Report: data summary for 2012, Device-associated Module, Am J Infect Control 2013;41:1148-66.

2011 Data

2011 Report pdf icon[PDF – 200 KB]
Summary of Device-associated (DA) Module data collected by hospitals participating in the National Healthcare Safety Network (NHSN) for events occurring from January through December 2011 and reported to the Centers for Disease Control and Prevention (CDC) by August 1, 2012.
2011 Data Tables excel icon[XLS – 200 KB]
A read-only .xls version of the data tables published in the NHSN Annual Report: data summary for 2011, Device-associated Module, Am J Infect Control 2013;41:286-300.

2010 Data

2010 Report pdf icon[PDF – 1 MB]
Summary of Device-associated (DA) Module data collected by hospitals participating in the National Healthcare Safety Network (NHSN) for events occurring from January through December 2010 and reported to the Centers for Disease Control and Prevention (CDC) by July 7, 2011.
2010 Data Tables (plus read-only version) excel icon[XLS – 200 KB]
A read-only .xls version of the data tables published in the NHSN Annual Report: data summary for 2010, Device-associated Module, Am J Infect Control 2011;39:798-816.

2009 Data

2009 Report pdf icon[PDF – 3 MB]
Summary of Device-associated Module data collected by hospitals participating in the National Healthcare Safety Network (NHSN) for events occurring from January through December 2009 and reported to the Centers for Disease Control and Prevention (CDC) by October 18, 2010.
2009 Data Tables (plus read-only version) excel icon[XLS – 200 KB]
A read-only .xls version of the data tables published in the NHSN Annual Report: data summary for 2009, Device-associated Module, Am J Infect Control 2011;39:349-67.

2006-2008 Data

2006-2008 Report pdf icon[PDF – 5 MB]
Summary of Device-associated (DA) and Procedure-associated (PA) module data collected and reported by hospitals and ambulatory surgical centers participating in the National Healthcare Safety Network (NHSN) from January 2006 through December 2008 as reported to the Centers for Disease Control and Prevention (CDC) by July 6 2009.
2006-2008 Data Tables excel icon[XLS – 200 KB]
A read-only .xls version of the data tables published in the NHSN Annual Report: data summary for 2006-2008, Device-associated Module, issued December 2009. Am J Infect Control 2009;37:783-805.

2006-2007 Data

- 2006-2007 Report pdf icon[PDF – 3 MB]
  Summary of Device-associated and procedure-associated module data collected and reported by hospitals participating in the NHSN from January 2006 through December 2007 as reported to the NHSN by March 24, 2008.

2006 Data

2006 Report pdf icon[PDF – 300 KB]
Device-associated infections data collected and reported by hospitals participating in the NHSN from January through December 2006.

1992-2004 Data

1992-2004 Report pdf icon[PDF – 600 KB]
National Nosocomial Infections Surveillance (NNIS) System Report, data summary from January 1992 through June 2004, issued October 2004.

By CMS Region

Ambulatory Surgery Centers

Inpatient Psychiatric Facilities

Inpatient Rehabilitation Facilities

Long-Term Acute Care Hospitals

By State

Acute Care Hospitals

Outpatient Dialysis Facilities

2014 Data

NHSN Dialysis Event Surveillance Report for 2014external icon

2007 – 2011 Data

NHSN Dialysis Event Surveillance Report (January 2007 – April 2011)external icon

2006 Data

NHSN Dialysis Surveillance Report (2006) pdf icon[PDF -300 KB]
Thirty-two outpatient hemodialysis providers in the United States voluntarily reported 3699 adverse events to the Centers for Disease Control and Prevention (CDC) National Health-care Safety Network (NHSN) during 2006. Seminars in Dialysis—Vol 21, No 1 (January–February) 2008 pp. 24–28.

Short Summary: Testing for C. difficile and Standardized Infection Ratios, 2019 pdf icon[PDF – 250 KB]

Testing for C. difficile typically relies on nonculture-based techniques of enzyme immunoassays (EIAs) and nucleic acid amplification tests (NAATs) for toxigenic C. difficile, used either alone or in combination with one another. These tests vary in sensitivities, specificities, and clinical implications depending on test type and manufacturer. For this reason, NHSN’s risk-adjusted standardized infection ratio (SIR) for CDI takes into account the test type in use as reported by each facility. Nevertheless, representatives from some facilities have expressed concern that their choice of test type is driving their performance more than their actual burden of infection. In addition, some facilities deploy a multi-step testing algorithm that uses more than one test type. Starting in January 2018, NHSN adjusted its CDI surveillance protocol by stipulating that when facilities use a multi-step testing algorithm on the same stool specimen, the result of the last test performed, as documented in the medical record, determines whether facilities’ CDI rates are adjusted by toxin EIA or by NAAT.

These analyses of CDI data reported by thousands of acute-care hospitals to NHSN indicate that using the NAAT did not statistically inflate the SIR versus using EIA. While any individual acute-care hospital may have improved their SIR (or worsened it) by switching to EIA, acute-care hospitals switching to EIA did not preferentially improve their performance based on changing test type alone.

2015 National SIR and SUR Baseline

Historical SIR Baselines

Risk Adjustment for Healthcare Facility-Onset C. difficile and MRSA Bacteremia Laboratory-identified Event Reporting in NHSN (2010-2011) pdf icon[PDF – 500 KB]
This report describes the risk modeling that CDC applied to LabID event CDI and MRSA bacteremia data submitted to NHSN, the results of which have been incorporated into the analysis options in the NHSN application.
Improving Risk-Adjusted Measures of Surgical Site Infection for the NHSN (2006-2008) pdf icon[PDF – 600 KB]
Infect Control Hosp Epidemiol 2011;32(10):970-986.

Blood and Body Fluid Exposure

Summary Report for Blood and Body Fluid Exposure Data Collected from Participating Healthcare Facilities (June 1995 through December 2007) pdf icon[PDF – 3 MB]
This report describes to the public health, the occupational health and safety, and infection control communities, the variety of occupational exposures to blood and body fluids that occur among healthcare providers (HCP).
The National Surveillance System for Healthcare Workers (NaSH) was a voluntary surveillance system developed by the Centers for Disease Control and Prevention (CDC) to systematically collect information important to the prevention of occupational exposures and infections among healthcare personnel (HCP).
NaSH was established in 1995 by the Hospital Infections Program, National Center for Infectious Disease, in consultation with other divisions and institutes within CDC. NaSH collected surveillance data through 2007, and became a legacy system to the web-based National Healthcare Safety Network (NHSN) Healthcare Personnel Safety Component which was launched in August 2009.