Volume 18, Number 6—June 2012
CME ACTIVITY - Research
Trends in Invasive Infection with Methicillin-Resistant Staphylococcus aureus, Connecticut, USA, 2001–2010
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.