Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22412
DC FieldValueLanguage
dc.contributorDepartment of Health Technology and Informatics-
dc.contributorSchool of Nursing-
dc.creatorHo, J-
dc.creatorO'Donoghue, M-
dc.creatorGuardabassi, L-
dc.creatorMoodley, A-
dc.creatorBoost, M-
dc.date.accessioned2015-07-14T01:28:47Z-
dc.date.available2015-07-14T01:28:47Z-
dc.identifier.issn1863-1959-
dc.identifier.urihttp://hdl.handle.net/10397/22412-
dc.language.isoenen_US
dc.publisherWiley-Blackwellen_US
dc.subjectGenotypingen_US
dc.subjectHong Kongen_US
dc.subjectMethicillin-resistant Staphylococcus aureusen_US
dc.subjectPhenotypingen_US
dc.subjectPig carcassesen_US
dc.titleCharacterization of methicillin-resistant staphylococcus aureus isolates from pig carcasses in Hong Kongen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage416-
dc.identifier.epage423-
dc.identifier.volume59-
dc.identifier.issue6-
dc.identifier.doi10.1111/j.1863-2378.2012.01473.x-
dcterms.abstractThis study describes the isolation and characterization of methicillin-resistant Staphylococcus aureus (MRSA) from slaughtered pigs sampled from local markets in Hong Kong. The nares of 400 slaughtered pigs were cultured and MRSA isolates characterized for the presence of antibiotic-resistance determinants, toxins and SCCmec and spa types using PCR. Clonality was investigated using PFGE and MLST. The prevalence of MRSA colonization of slaughter pigs was 39.3%, the majority (92%) harbouring SCCmec type IVb. Of the 157 samples yielding MRSA, 13 had two distinct MRSA strains present. Spa type t899 was predominant, with only 5/170 isolates displaying closely related types (t4474, t1939, t2922 and t5390). PFGE with sma1 and MLST confirmed the strains as ST9. Most isolates were multidrug resistant. Tetracycline resistance (97%) was mainly attributable to tet(K) with only 3% of isolates additionally harbouring tet(M). Resistance to erythromycin (89%) and chloramphenicol (71%) was associated with the presence of erm(C), and fex(A), respectively. No strains carried cfr and there was no resistance to linezolid, although minimum inhibitory concentration (MICs) were close to the resistance break point. Resistance to clindamycin (99%), ciprofloxacin(78%), quinopristin-dalfopristin (44%) and cotrimoxazole (32%) was common, but remained low for fusidic acid (4%) and rifampicin (2%). All strains were negative for PVL, exfoliative, and enterotoxins. This survey confirmed the uniformity of MRSA isolates in pigs from several regions of China, in contrast to more diversified characteristics reported in European studies. Colonization rates were higher than previously reported. Isolates were resistant to a wide range of antibiotics, but resistance was not detected to linezolid, nitrofurantoin, vancomycin or tigecycline. Although the clinical importance of ST9 in humans is uncertain, continued surveillance, in particular of those occupationally-exposed, is recommended.-
dcterms.bibliographicCitationZoonoses and public health, 2012, v. 59, no. 6, p. 416-423-
dcterms.isPartOfZoonoses and public health-
dcterms.issued2012-
dc.identifier.isiWOS:000307727300007-
dc.identifier.scopus2-s2.0-84865162952-
dc.identifier.eissn1863-2378-
dc.identifier.rosgroupidr63382-
dc.description.ros2012-2013 > Academic research: refereed > Publication in refereed journal-
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