August 11,2010 Jama reported that from 2005 through 2008, there were 21503 episodes of invasive MRSA infections; 17508 were health care associated. Of these, 15,458 were MRSA bloodstream infections. The incidence rate of hospital-onset invasive MRSA infections was 1.02 per 10,000 population in 2005 and decreased 9.4% per year (95% confidence interval [Cl], 14.7% to 3.8%, P=.005), and the incidence of health care associated community onset infections was 2.20 per 10,000 population in 2005 and decreased 5.7% per year (95% Cl, 9.7% to 1.6%; P=.01). The decrease was most prominent for the subset of infections with BSIs (hospital-onset: -11.2%; 95% Cl-15.9% to -6.3%; health care associated community onset: -6.6%, 95% Cl-9.5% to -3.7%)
Conclusion: Over the 4 year period from 2005 through 2008 in 9 diverse metropolitan areas, rates of invasive health care associated MRSA infections decreased among patients with health care associated infections that began in the community and also decreased among those with hospital onset invasive disease.
JAMA 2010,304(6):641-648 To obtain the full article visit www.jama.com Title of the Article is: Health Care-Associated Invasive MRSA Infections, 2005-2008