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Volume 15, Number 12—December 2009

Dispatch

Novel Lineage of Methicillin-Resistant Staphylococcus aureus, Hong Kong

Luca Guardabassi, Margie O’Donoghue, Arshnee Moodley, Jeff Ho, and Maureen BoostComments to Author 
Author affiliations: University of Copenhagen, Frederiksberg C, Denmark (L. Guardabassi, A. Moodley); The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong Special Administrative Region, People’s Republic of China (M. O’Donoghue, J. Ho, M. Boost)

Main Article

Table 1

Characteristics of methicillin-resistant Staphylococcus aureus isolates from pig carcasses in Hong Kong, 2008*

Isolate Sampling date Resistance pattern spa type SCCmec type PFGE pattern† aroE allele MLST type
K1 Feb 22 3 t899 IVb A1 3 ST9
G29 Mar 11 4 t899 IVb A2 3 ST9‡
55 Mar 27 1 t899 IVb A1 3 ST9‡
56 1 t899 V B1 3 ST9
57 1 t899 V B1 3 ST9‡
61 1 t899 V B1 3 ST9‡
54 1 t899 V B2 3 ST9‡
B40 Apr 15 1 t899 IVb A1 3 ST9‡
B46 1 t899 IVb A1 3 ST9‡
B50 1 t899 IVb A1 3 ST9‡
B51 1 t899 IVb A1 3 ST9‡
B52 1 t899 IVb A1 3 ST9‡
B22 1 t899 V B1 3 ST9‡
B39 1 t899 IVb A3 3 ST9‡
B37 2 t899 IVb A2 3 ST9‡
B36 2 t899 IVb A4 3 ST9‡

*SCC, staphylococcal chromosome cassette; PFGE, pulsed-field gel electrophoresis; MLST, multilocus sequence typing. Resistance patterns: 1, oxacillin, penicillin, tetracycline, chloramphenicol, gentamicin, clindamycin, erythromycin, ciprofloxacin, cotrimoxazole; 2, oxacillin, penicillin, tetracycline, chloramphenicol, clindamycin , erythromycin, ciprofloxacin, fusidic acid; 3, oxacillin, penicillin, tetracycline, chloramphenicol, gentamicin, clindamycin, erythromycin, ciprofloxacin, cotrimoxazole, fusidic acid, 4, oxacillin, penicillin, tetracycline, chloramphenicol, clindamycin, ciprofloxacin, cotrimoxazole, fusidic acid.
†Closely or possibly related PFGE patterns according to the Tenover criteria (8) are designated by the same letter and different numbers.
‡ST9 was predicted on the basis of PFGE and spa and aroE typing.

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