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Volume 18, Number 6—June 2012

CME ACTIVITY

Trends in Invasive Infection with Methicillin-Resistant Staphylococcus aureus, Connecticut, USA, 2001–2010

James L. HadlerComments to Author , Susan Petit, Mona Mandour, and Matthew L. Cartter
Author affiliations: Yale University School of Public Health, New Haven, Connecticut, USA (J.L. Hadler); Connecticut Department of Public Health, Hartford, Connecticut, USA (S. Petit, M. Mandour, M.L. Cartter)

Main Article

Table 4

Estimated incidence of MRSA, by category and strain PFGE type and year, Connecticut, USA, 2005–2010*†

MRSA category and PFGE type 2005 2006 2007 2008 2009 2010 Incidence difference, 2005–2010
CA
Statewide incidence 3.25 3.36 3.53 3.54 3.47 3.08 −0.17
% C strain‡ 27.8 46.7 30.0 62.5 68.8 56.3
C strain incidence 0.90 1.57 1.06 2.21 2.39 1.73 +0.83
H strain incidence 2.35 1.79 2.47 1.33 1.08 1.35 −1.00
HA
Statewide incidence 24.16 21.78 22.54 19.27 18.13 18.95 −5.21
% C strain 4.0 8.9 6.7 10.7 14.5 15.2
C strain incidence 0.97 1.93 1.52 2.06 2.62 2.87 +1.90
H strain incidence 23.19 19.85 21.02 17.21 15.51 16.08 −7.11

*MRSA, methicillin-resistant Staphylococcus aureus; PFGE, pulsed-field gel electrophoresis; CA, community associated; C strain, community-related strain; H strain , health care–related strain; HA, health care–associated (combined hospital-associated community onset and hospital onset).
†Incidence per 100,000 population.
‡Percentage based on isolate testing shown in Table 3.

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