Tuesday, March 25, 2014

Public Reporting of MRSA and Clostridium difficile LabID Events



by Zack Moore, MD and Jennifer MacFarquhar, RN, MPH, CIC

Clostridium difficile (C. diff) and methicillin-resistant Staphylococcus aureus (MRSA) are both important public health problems, responsible for approximately 14,000 and 11,000 deaths in the United States each year, respectively. Both of these infections are frequently acquired in healthcare settings and have therefore been the target of many control efforts by hospitals working independently and in collaboration. These efforts have led to a 54% reduction in the number of invasive MRSA infections occurring during hospitalization between 2005 and 2011.1 However, the incidence of C. diff infections has continued to increase in recent years, as has the number of deaths attributed to C. diff in North Carolina.2,3


Beginning in January 2013, all acute care hospitals in North Carolina began reporting MRSA bacteremia and C. diff LabID events through the CDC’s National Healthcare Safety Network (NHSN).  These hospital-specific data were first made public on the Centers for Medicare and Medicaid Services’ Hospital Compare website beginning in December 2013 and were first included in the North Carolina Division of Public Health’s Healthcare-Associated Infections Quarterly Report in January 2014.4,5


LabID event reporting is based solely on laboratory results, and therefore some of the events reported may not represent true infections. However, this method of reporting has the advantages of being relatively more objective and less labor-intensive than case-based reporting using clinical case definitions. Moreover, publication of these infection data provides an opportunity to examine and understand the information on a statewide and individual hospital level. In North Carolina, infection rates for the first nine months since reporting began (January–September 2013) were within the predicted range for both C. difficile and MRSA bacteremia. Data from the first full year of reporting will be published in the upcoming annual report, anticipated in April 2014. 


Infections caused by both of these organisms are preventable. Publication of these data highlights the excellent and ongoing work that hospitals do to protect patients, and will hopefully lead to increased attention and awareness of these important threats to patient safety.




1. Dantes R, Mu Y, Bellflower R et al. National Burden of Invasive Methicillin-Resistant Staphylococcus aureus Infections, United States, 2011. JAMA Intern Med. 2013; 173(21):1970–1978.


2. Lessa FC, Gould CV, McDonald LC. Current status of Clostridium difficile infection epidemiology. Clin Infect Dis. 2012; 55 Suppl 2:S65–70.


3. North Carolina State Center for Health Statistics Vital Records Report, available at http://www.schs.state.nc.us/data/vital.cfm. Accessed February 11, 2014.