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Volume 16, Number 9—September 2010

CME ACTIVITY - Research

Illicit Drug Use and Risk for USA300 Methicillin-Resistant Staphylococcus aureus Infections with Bacteremia

Kristen M. KreiselComments to Author , 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
Author affiliations: Author affiliations: University of Maryland, Baltimore, Maryland, USA (K.M. Kreisel, J.K. Johnson, O.C. Stine, M.D. Shardell, E.N. Perencevich, M.-C. Roghmann); VA Maryland Health Care System, Baltimore (K.M. Kreisel, E.N. Perencevich, M.-C. Roghmann); VA Western New York Healthcare System, Buffalo, New York, USA (A.J. Lesse); University at Buffalo, Buffalo (A.J. Lesse); Washington DC VA Medical Center, Washington, DC, USA (F.M. Gordin); George Washington University, Washington (F.M. Gordin); Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA (M.W. Climo); Medical College of Virginia at Virginia Commonwealth University, Richmond (M.W. Climo)

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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).

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