table 2. Culture-Confirmed MRSA and MSSA Infections in Adults and Children, Classified as Community-Associated (CA), Healthcare-Associated (HA) and Healthcare- Associated, Community-Onset (HACO) and Stratified by Clinical Syndrome, University of Chicago Medicine, January 2006 through March 2014 (n=10,889)
CA MRSA
(N=1,681), No. (%)
SSTI Blood
1,318 (78.4) 55 (3.3)
Bone/joint 22 (1.3) Respiratory 90 (5.4) Urinary CNS
59 (3.5) 0 (0.0)
Other 107 (6.4) Unknown 27 (1.6) CA MRSA
(N=1,754), No. (%)
SSTI Blood
1,608 (91.7) 8 (0.5)
Bone/joint 20 (1.1) Respiratory 29 (1.7) Urinary CNS
7 (0.4) 0 (0.0)
Other Unknown
71 (4.1) 5 (0.3)
HACO MRSA (N=581), No. (%)
273 (47.0) 134 (23.1) 24 (4.1) 77 (13.3) 45 (7.8) 1 (0.2)
15 (2.6) 7 (1.2)
HACO MRSA (N=122), No. (%)
79 (64.8) 21 (17.2) 3 (2.5)
12 (9.8) 1 (0.8) 0 (0)
6 (4.9) 0 (0)
HA MRSA (N=1,072), No. (%)
481 (44.9) 206 (19.4) 18 (1.7)
209 (19.5) 80 (7.5) 2 (0.2)
59 (5.5) 10 (0.9)
HA MRSA (N=281), No. (%)
181 (64.4) 32 (11.4) 1 (0.4)
43 (15.3) 3 (1.1) 1 (0.4)
17 (6.1) 2 (0.7)
Adults (n=7,226), No. (% of column total) CA MSSA
Total MRSA (N=3,203), No. (%)
(N=1,877), No. (%)
2,072 (62.2) 1,156 (61.6) 397 (11.9) 64 (1.9)
376 (11.3) 184 (5.5) 3 (0.1)
181 (5.4) 44 (1.3)
Total MRSA (N=2,054), No. (%)
1,868 (86.6) 61 (2.8) 24 (1.1) 84 (3.9) 11 (0.5)
1 (0.05)
94 (4.4) 7 (0.3)
84 (4.5) 52 (2.8) 184 (9.8) 84 (4.5) 2 (0.1)
268 (14.3) 32 (1.7)
HACO MSSA (N=755), No. (%)
297 (39.3) 198 (26.2) 28 (3.7)
144 (19.1) 30 (4.0) 3 (0.4)
39 (5.2) 7 (0.9)
Children (n=3,663), No. (% of column total) CA MSSA
(N=1,011), No. (%)
788 (77.9) 16 (1.6) 15 (1.5) 79 (7.8) 13 (1.3) 2 (0.2)
85 (8.4) 9 (0.9)
HACO MSSA (N=129), No. (%)
59 (45.7) 16 (12.4) 2 (1.6)
31 (24.0) 2 (1.6) 7 (5.4)
10 (7.8) 2 (1.6)
HA MSSA
(N=1,260), No. (%)
551 (43.7) 205 (16.3) 22 (1.8)
303 (24.1) 45 (3.6) 2 (0.2)
89 (7.1) 26 (2.1)
HA MSSA (N=366), No. (%)
156 (42.6) 59 (16.1) 0 (0.0)
106 (29.0) 7 (1.9) 3 (0.8)
29 (7.9) 3 (0.8)
Total MSSA (N=3,892), No. (%)
2,004 (51.5) 487 (12.5) 102 (2.6) 631 (16.2) 160 (4.1) 7 (0.2)
396 (10.2) 65 (1.7)
Total MSSA (N=1,506), No. (%)
1,003 (66.6) 91 (6.1) 17 (1.1)
216 (14.3) 22 (1.5) 12 (0.8) 124 (8.2) 14 (0.9)
Total S. aureus (N=7,226), No. (%)
4,076 (56.4) 884 (12.2) 166 (2.3)
1,007 (13.9) 344 (4.7) 10 (0.1) 577 (8.0) 109 (1.5)
Total SA
(N=3,663) No. (%)
2,871 (78.4) 152 (4.2) 41 (1.1) 300 (8.2) 33 (0.9) 13 (0.4) 218 (6.0) 21 (0.6)
NOTE. CNS, central nervous system; MSSA, methicillin-susceptible Staphylococcus aureus; MRSA, methicillin-resistant Staphylococcus aureus; SSTI, skin and soft-tissue infection.
s.aureusinfections, 2006–2014 1229
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