Volume 16, Number 9—September 2010
CME ACTIVITY - Research
Illicit Drug Use and Risk for USA300 Methicillin-Resistant Staphylococcus aureus Infections with Bacteremia
Table 1
Isolate and patient characteristics for 300 veterans who had Staphylococcus aureus bacteremia at 4 Veterans Affairs medical centers, USA, 2004–2008*
Characteristic |
No. (%) |
---|---|
S. aureus isolate characteristics | |
USA300 MRSA | 67 (22) |
All other S. aureus | 233 (78) |
Non-USA300 MRSA | 117 (39) |
MSSA |
116 (39) |
Patient characteristics | |
Age, y, mean ± SD | 68 ± 13 |
Sex | |
M | 295 (98) |
F | 5 (2) |
Race | |
Black | 95 (32) |
Other | 205 (68) |
Year of presentation† | |
Late | 169 (56) |
Early | 131 (44) |
Charlson score, mean ± SD | 4.7 ± 3.0 |
HIV infection | |
Yes | 16 (5) |
No | 284 (95) |
Illicit drug use | |
Yes | 22 (7) |
No | 278 (93) |
History of colonization or infection with MRSA | |
Yes | 80 (27) |
No | 220 (73) |
Hospitalized in year before infection | |
Yes | 195 (65) |
No | 105 (35) |
Surgery in year before infection | |
Yes | 109 (36) |
No | 191 (64) |
Residence in LTCF in year before infection | |
Yes | 34 (11) |
No | 266 (89) |
Renal failure in year before infection | |
Yes | 114 (38) |
No | 186 (62) |
*Values are no. (%) except as indicated. MRSA, methicillin-resistant S. aureus; MSSA, methicillin-susceptible S. aureus; LTCF, long-term care facility.
†Year of presentation stratified into 2 periods: early (January 1, 2004–March 31, 2006) and late (April 1, 2006–June 30, 2008).