8 per cent was associated with an outbreak of CAMRSA
infections inAmerican football players (11).
Unlike typical multi-resistant HA-MRSA, for which vancomycin is the drug of choice, CAMRSA
are usually pan-susceptible to non-beta-lactam antimicrobials, although they are usually not susceptible to macrolides (Rice, 2006).
Results: Cutaneous CAMRSA
infection occurred in seven student athletes (four women and three men) who were either weight lifters (three students) or members of a varsity sports team: volleyball (two women), basketball (one woman), and football (one man).
However, the only significant predictors of CAMRSA
infection compared with HA-MRSA were age <69 years, which was associated with increased risk (odds ratio [OR] 5.
Such a particular susceptibility pattern and the community origin of the infection prompted molecular investigation and typing by established methods, which confirmed the isolate to be CAMRSA
and identified it as belonging to the USA400 clone (ST1, type IVa SCCmec, presence of PVL genes, agr type III, spa type t128).
In addition to the PVL genes, strains that cause CAMRSA
infections typically carry staphylococcal chromosomal cassette mec (SCCmec) types IV and V, small genetic resistance elements that are presumably mobile.
We included all strains resistant to or with intermediate susceptibility to fusidic acid, a characteristic of many CAMRSA
isolates in Europe.
The prevalence of CAMRSA
is increasing among young children, and intrafamilial transmission of isolates has been documented (11,12).
The molecular epidemiology of healthcare-related MRSA in Colombia has changed during the past 3 years (10), but no reports of CAMRSA
1%, respectively, of adult and pediatric inpatient isolates met the criteria for the 24-hour definition of CAMRSA
(p = 0.
This study describes the different epidemic and CAMRSA
clones isolated in WA and establishes their genetic relatedness.
As this case suggests, BORSA can sometimes be confused with CAMRSA
because of similar clinical signs and symptoms and overlapping oxacillin MICs (2 8 [micro]g/mL and 4-64 [micro]g/mL, respectively) (1,4,6).