Table 3

Molecular epidemiology of USA300 PFT strains (n = 58)

USA300 PFT subtypes n(%)

Diversilab type* n(%)

mecA

SCCmec type

ACME

lukSF-PV

cap5


1 - 42(72%)

USA300-41(98%)

USA500-1(24%)

42

IVa-42

42

42

30(71%)


2 - 6(10%)

USA300-4(67%)

USA500-2(33%)

6

IVa-6

6

6

6


3 - 4(7%)

USA300-4

4

IVa-4

4

4

4


4 - 2(3%)

USA300-2

2

IVa-2

1

2

2


5 - 2(3%)

USA300-2

2

IVa-2

2

2

2


6 - 1(2%)

USA300-1

1

IVa-1

0

1

1


7 - 1(2%)

USA300-1

1

IVa-1

1

1

1


Total(n)

58(100%)

58(100%)

58(100%)

56(97%)

58(100%)

46(79%)


PFT: Pulsed field type; SCC: Staphylococcal Cassette Chromosome, lukSF-PV genes that encode Panton-Valentine leukocidin (PVL), ACME: Arginine catabolic mobile element.

*The DiversiLab strain types are named as corresponding PFT's based on a standardized comparison.

For USA300 PFT subtypes please see figure 2.

McCullough et al. BMC Pediatrics 2011 11:96   doi:10.1186/1471-2431-11-96

Open Data