TABLE 3.

SCCmec types identified in 99 MRSA strains by PCR

SCCmec typeSubtypeaPCR resultNo. of strainsOrigin(s)b
M-PCR 1M-PCR 2 mec typeM-PCR 3, 4 J1 region typeM-PCR 5M-PCR 6PCR identifying SCCmercurye
ccr typeccrCTn554ΨTn554pUB110pT181
I1.n.11B1NDcND13D, Eng, I, S, U, UN
1.n.1+1NDND+ (1)2Eng, E
1.n.21NDND+1US
N.n.1NTdNDND1I
II1.1.12A1++32C, I, US, UN
1.n.211US
1.1.21+1C
3.1.13++1I
4.1.14++2C, US
III1.1.13+A1+++8C, Eng, I, US, UN
1.1.21+3US, UN
1.2.11+1US
IV1.n.12B1NDND9A, C, US
2.n.12NDND3US
3.n.13NDND2US
3.n.23NDND+10F
4.n.14NDND3US
NTA++2UN
+NT+1US
NT3US
  • a The subtypes are shown as Arabic numerals separated by a period. The first number indicates the subtype of the J1 region, the second number indicates the subtype of the J2 region, and the third number indicates the subtype of the J3 region. Each number is separated by a period. If the subtype of the J2 region was not examined, it was indicated as n.

  • b Abbreviations: A, Australia; C, Canada; D, Denmark; E, Egypt; F, France; I, Ireland; Eng, England; S, Switzerland; U, Uganda; US, United States; UN, unknown.

  • c ND, not determined.

  • d NT, nontypeable.

  • e Numbers in parentheses indicate the number of positive strains if the number is not the same as the number of strains indicated in the next column.