Surveillance (Data Collection & Statistical Analysis)

CDC collects data on healthcare-associated infections (HAIs) as part of its responsibility for research and investigation as authorized under Title III, Section 301, Section 304, and Section 306 of the Public Health Service Act (42 USC 241, 242b, 242k, and 242m(d)). The data are collected for the purposes of quality improvement and program management only. Hospitals are free to voluntarily release their own data to anyone they choose (e.g., to states or accrediting entities for accountability or for consumer choice purposes).

Surveillance Systems

  • NHSN - National Healthcare Safety Network
    General information and documents relating to the NHSN
  • NNIS - National Nosocomial Infections Surveillance System
    Publications and information about NNIS and reports from the NNIS System
  • DSN - Dialysis Surveillance Network
    Publications and general Information about the DSN
  • S.E.A.R.C.H. - Surveillance of Emerging Antimicrobial Resistance Connected to Healthcare
    What SEARCH is and how to participate
  • BaCon Study - Bacterial Contamination of Blood
    Results and forms from the BaCon Study

Disease and Condition-specific Statistical Resources

Surveillance Definitions


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Date last modified: Sept 25, 2008
Content source: 
Division of Healthcare Quality Promotion (DHQP)
National Center for Preparedness, Detection, and Control of Infectious Diseases

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