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.