Volume 16, Number 9—September 2010
CME ACTIVITY
Illicit Drug Use and Risk for USA300 Methicillin-Resistant Staphylococcus aureus Infections with Bacteremia
Kristen M. Kreisel
, J. Kristie Johnson, O. Colin Stine, Michelle D. Shardell, Eli N. Perencevich, Alan J. Lesse, Fred M. Gordin, Michael W. Climo, and Mary-Claire Roghmann
, J. Kristie Johnson, O. Colin Stine, Michelle D. Shardell, Eli N. Perencevich, Alan J. Lesse, Fred M. Gordin, Michael W. Climo, and Mary-Claire RoghmannTable 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).
