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Antimicrobial Use Prevalence Survey

Results of a multistate, acute care hospital antimicrobial-drug use prevalence survey are now available: Prevalence of Antimicrobial Use in US Acute Care Hospitals, May-September 2011. The purpose of this survey was to determine the prevalence of inpatient antimicrobial-drug use, the most common antimicrobial drug types, and the reasons for their use. The Digital News Release contains video links and resources on this publication. Additional information about the Emerging Infections Program Healthcare-Associated Infection and Antibiotic Use Prevalence Survey can be found at:


HAI Prevalence Survey

The CDC healthcare-associated infection (HAI) prevalence survey provides an updated national estimate of the overall problem of HAIs in U.S. hospitals. Based on a large sample of U.S. acute care hospitals, the survey found that on any given day, about 1 in 25 hospital patients has at least one healthcare-associated infection. There were an estimated 722,000 HAIs in U.S acute care hospitals in 2011. About 75,000 hospital patients with HAIs died during their hospitalizations. More than half of all HAIs occurred outside of the intensive care unit.

Estimates of Healthcare-Associated Infections Occurring in Acute Care Hospitals in the United States, 2011

Major Site of Infection Estimated No.
Pneumonia 157,500
Gastrointestinal Illness 123,100
Urinary Tract Infections 93,300
Primary Bloodstream Infections 71,900
Surgical site infections from any inpatient surgery 157,500
Other types of infections 118,500
Estimated total number of infections in hospitals 721,800

To read the full report, please visit: CDC HAI Prevalence Survey
Magill SS, Edwards JR, Bamberg W, et al. Multistate Point-Prevalence Survey of Health Care‚ÄďAssociated Infections. N Engl J Med 2014;370:1198-208.


HAI Progress Report

The CDC National and State Healthcare-Associated Infections Progress Report is a report that gives a closer look at the healthcare-associated infections (HAIs) most commonly reported to CDC using the National Healthcare Safety Network (NHSN). This is an annual report that describes national and state progress in preventing central line-associated bloodstream infections (CLABSI), catheter-associated urinary tract infections (CAUTI), select surgical site infections (SSI), hospital-onset Clostridium difficile infections (C. difficile), and hospital-onset methicillin-resistant Staphylococcus aureus (MRSA) bacteremia (bloodstream infections).

The current report is based on 2013 data. On the national level, the report found:

  • A 46 percent decrease in CLABSI between 2008 and 2013
  • A 19 percent decrease in SSIs related to the 10 select procedures tracked in the report between 2008 and 2013
  • A 6 percent increase in CAUTI between 2009 and 2013; although initial data from 2014 seem to indicate that these infections have started to decrease
  • An 8 percent decrease in hospital-onset MRSA bacteremia between 2011 and 2013
  • A 10 percent decrease in hospital-onset C. difficile infections between 2011 and 2013

To read the full report, please visit the National and State Healthcare-Associated Infections Progress Report.


Previous Estimates of HAIs

Additional reports can be found at on the NHSN Data & Statistics page.


Monitoring HAIs

CDC receives data on healthcare-associated infections (HAIs) through parallel efforts.


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