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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)

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Table 3

MRSA sterile site isolates, by PFGE type, place of onset category, and year, Connecticut, USA, 2005–2010*

MRSA category and PFGE type 2005 2006 2007 2008 2009 2010 Total p value, trend
CA
C strain 5 (28) 7 (47) 3 (30) 10 (63) 11 (69) 9 (56) 45 (49) 0.02
H strain 13 (72) 8 (53) 7 (70) 6 (38) 5 (31) 7 (44) 46 (51)
HACO
C strain 5 (6) 7 (9) 4 (7) 6 (11) 7 (12) 10 (21) 39 (11) 0.01
H strain 74 (94) 67 (91) 53 (93) 49 (89) 50 (88) 37 (79) 330 (89)
HO
C strain 0 0 2 (6) 3 (11) 4 (21) 0 9 (6) 0.07
H strain 45 (100) 5 (100) 30 (94) 26 (90) 15 (79) 19 (100) 140 (94)
HA
C strain 5 (4) 7 (9) 6 (7%) 9 (11) 11 (14) 10 (15) 48 (9) 0.003
H strain 119 (96) 72 (91) 83 (83) 75 (89) 65 (86) 56 (85) 470 (91)

*Values are no. (%). MRSA, methicillin-resistant Staphylococcus aureus; PFGE, pulsed-field gel electrophoresis; CA, community-associated; HACO, health care–associated community onset; HO, hospital onset; HA, health care–associated (combined HACO and HO); C strain, community-related strain; H strain, health care–related strain.

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