TABLE 4.

Characterization of PVL-positive MRSA strains isolated in 1979 to 1985, 2002, and 2004

Yr of isolation (no. of strains)Phage typea (no. of strains)Coagulase isotypeSCCmec type (no. of strains)Strain genotype by MLST
No. of tested strainsSTAllelic profile
1979-1985 (53)φ108PVL (33)4I (1)1302, 2, 2, 2, 6, 3, 2
II (2)1302, 2, 2, 2, 6, 3, 2
IV.1 (8)3302, 2, 2, 2, 6, 3, 2
2Nb2, 2, N, 2, 6, 3, 2
IV.3 (21)3302, 2, 2, 2, 6, 3, 2
IV.5 (1)1302, 2, 2, 2, 6, 3, 2
φ108PVL-like (4)4IV.1 (1)1302, 2, 2, 2, 6, 3, 2
IV.3 (3)1302, 2, 2, 2, 6, 3, 2
Icosahedral-head type (2)4IV.3 (1)1302, 2, 2, 2, 6, 3, 2
4type II.n (1)1302, 2, 2, 2, 6, 3, 2
φSa2958 type (1)2II (1)151, 4, 1, 4, 12, 1, 10
Sa2958-like phage of unknown type (13)4I (10)2302, 2, 2, 2, 6, 3, 2
II (1)1302, 2, 2, 2, 6, 3, 2
IV.3 (1)1302, 2, 2, 2, 6, 3, 2
IV.n (1)1302, 2, 2, 2, 6, 3, 2
2000s (12)φSa2958 (2)4IV.3 (2)2302, 2, 2, 2, 6, 3, 2
Elongated-head type (8)IV.3 (1)1302, 2, 2, 2, 6, 3, 2
NTc (6)1302, 2, 2, 2, 6, 3, 2
φSa2958-like phage of unknown type (1)4I (1)17652, 2, 2, 2, 6, 104, 2
Nontypeable (1)7V (1)15919, 23, 15, 2, 19, 20, 15
  • a Phage type judged with M-PCRs.

  • b N, the ST of this strain could not be assigned, since the glpF gene could not be amplified by PCR. The allele numbers other than glpF were the same as those for ST30.

  • c NT, nontypeable.