Molecular epidemiology of Staphylococcus aureus colonization in 2 long-term care facilities.
Persistent colonization with Staphylococcus aureus was assessed in 22 nursing home residents. Eighteen residents (82%) remained colonized with the same strain found at baseline; 6 (33%) of 18 residents transiently acquired a new strain. Four residents (18%) acquired a new persistent strain. Residents colonized with methicillin-resistant S. aureus were more likely to acquire a new strain (67%) than were residents colonized with methicillin-susceptible S. aureus (20%) (P=.04).
Mody
Lona
L
Geriatric Research Education and Clinical Center, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI 48105, USA. lonamody@umich.edu
Flannery
Erica
E
Bielaczyc
Andrew
A
Bradley
Suzanne F
SF
D015169:Colony Count, Microbial; D005260:Female; D006801:Humans; D008134:Long-Term Care; D008297:Male; D016106:Methicillin Resistance; D008824:Michigan; D017720:Molecular Epidemiology; D009735:Nursing Homes; D013203:Staphylococcal Infections / Q000175:diagnosis / Q000453:epidemiology*; D013211:Staphylococcus aureus / Q000254:growth & development* / Q000472:pathogenicity