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Volume 12, Number 8—August 2006

Dispatch

Community-acquired Methicillin-resistant Staphylococcus aureus in Children, Taiwan

Wen-Tsung Lo*†, Wei-Jen Lin†, Min-Hua Tseng†, Sheng-Ru Wang†, Mong-Ling Chu†, and Chih-Chien Wang*†Comments to Author 
Author affiliations: *National Defense Medical Center, Taipei, Taiwan, Republic of China; †Tri-Service General Hospital, Taipei, Taiwan, Republic of China

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Table 2

Distribution of staphylococcal cassette chromosome (SCC)mec types and exotoxin patterns among methicillin-resistant Staphylococcus aureus (MRSA) strains collected from community-acquired (CA) MRSA infections and nares cultures*

CA-MRSA–colonizing strains
CA-MRSA–infecting strains†
Characteristic PVL positive (n = 15) PVL negative (n = 74) (n = 32)
SCCmec type, no. (%) of isolates
II 0 1 (1.35) 0
III 0 1 (1.35) 0
IIIA 0 1 (1.35) 0
IV 7 (46.7) 70 (94.6)‡ 5 (15.6)
VT§ 8 (53.3) 1 (1.35)‡ 27 (84.4)
No. (%) of isolates positive for production of other toxins
ETA 0 2 (2.7) 0
ETB 1 (6.7) 2 (2.7) 0
TSST-1 0 5 (6.6) 1 (3.1)
SEA 1 (6.7) 6 (8.1) 0
SEB 14 (93.3) 57 (77.0)¶ 32 (100)
SEC 0 4 (5.4) 0
SED 0 0 0
SEE 0 1 (1.4) 0
SEG/SEI 0 30 (40.5)‡ 0
SEH 0 1 (1.4) 0

*PVL, Panton-Valentine leukocidin; ETA, exfoliative toxin A; ETB, exfoliative toxin B; TSST-1, toxic shock syndrome toxin-1; SEA, staphylococcal enterotoxin A; SEB, staphylococcal enterotoxin B; SEC, staphylococcal enterotoxin C; SED, staphylococcal enterotoxin D; SEE, staphylococcal enterotoxin E; SEG, staphylococcal enterotoxin G; SEI, staphylococcal enterotoxin I; SEH, staphylococcal enterotoxin H.
†All 32 CA-MRSA–infecting strains were PVL positive.
‡p<0.001 by χ2 test for PVL-positive MRSA-colonizing strains and CA-MRSA–infecting strains vs. PVL-negative MRSA-colonizing strains.
§VT refers to the SCCmec VT element in strain TSGH 17 from Taiwan (10).
¶p = 0.006 by χ2 test for PVL-positive MRSA-colonizing strains and CA-MRSA–infecting strains vs. PVL-negative MRSA-colonizing strains.

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