How does CDC estimate the number of healthcare-associated infections in the United States?
To develop the national estimate, CDC used three sources of data 1) National Nosocomial Infections Surveillance (NNIS) system, a voluntary network of U.S. hospitals; 2) National Hospital Discharge Survey (NHDS), an annual survey of characteristics of inpatients discharged from U.S. hospitals; and 3) American Hospital Association (AHA) annual survey of hospitals and their characteristics. Are healthcare-associated infection rates getting better or worse? The 2002 estimate for all infections combined is not comparable to previous overall estimates. However, rates of healthcare-associated infection appear to be improving. For example, declines in rates of central-line associated bloodstream infections and surgical site infections were observed among hospitals participating in NNIS from about 1992 to 2004. In a regional collaboration of 32 hospitals in Pennsylvania, rates of central-line associated bloodstream infections declined 68% during a four year period. Read more What can I do as a
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