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Updated: Jul 10, 2026

Biosensor for Detection of Antibiotic Resistant Staphylococcus Bacteria
Published on: May 8, 2013
Methicillin-resistant Staphylococcus aureus containing the Panton-Valentine leucocidin gene in Germany in 2005 and
Wolfgang Witte1, Birgit Strommenger, Christa Cuny
1Robert Koch Institute, Wernigerode Branch, 38855 Wernigerode, Germany. wittew@rki.de
Objectives:
The aim of this paper is to attribute Panton-Valentine leucocidin (PVL)-positive methicillin-resistant Staphylococcus aureus (MRSA) to clonal lineages by molecular typing with special reference to isolates exhibiting spa type t008/multilocus sequence type (MLST) ST8 [widely disseminated in the USA as 'community-associated MRSA (caMRSA) USA300'].
Methods:
PVL-positive MRSA (n = 117) were detected among 4815 MRSA sent to the German National Reference Laboratory for typing. These isolates were analysed by PFGE, spa typing, multilocus sequence typing, grouping of SCCmec elements and PCR detection of arcA, msr(A), mph(B) and the > or =6 AT repeat unit in the SACOL0058 sequence.
Results:
Among the 117 isolates, 80 exhibited spa type t044 (corresponding to MLST ST80) and 23 exhibited spa type t008/MLST ST8. Other spa types were sporadically represented. Further characterization of isolates exhibiting t008/ST8 by PCR [arcA, msr(A), mph(B), > or =6 AT repeat signature] indicates the arrival of caMRSA 'USA300' in Central Europe.
Conclusions:
caMRSA ST80 still predominate; however, caMRSA ST8 exhibiting the characteristics of the 'USA300' clone became the second most frequent. Routine detection of this clone in clinical bacteriology can be easily performed by PCR.
Insights
Panton-Valentine leucocidin (PVL)-positive methicillin-resistant Staphylococcus aureus (MRSA) clonal lineages were identified. The USA300 clone, a community-associated MRSA (caMRSA), has arrived in Central Europe and is the second most frequent type.
Area of Science:
- Microbiology
- Molecular Epidemiology
Background:
- Panton-Valentine leucocidin (PVL) is a toxin produced by some strains of Staphylococcus aureus.
- Methicillin-resistant Staphylococcus aureus (MRSA) is a significant cause of healthcare-associated and community-associated infections.
- Identifying the clonal lineages of PVL-positive MRSA is crucial for understanding its epidemiology.
Purpose of the Study:
- To attribute PVL-positive MRSA to specific clonal lineages using molecular typing.
- To investigate the presence and characteristics of the community-associated MRSA (caMRSA) USA300 clone in Central Europe.
Main Methods:
- Analysis of 117 PVL-positive MRSA isolates from Germany using PFGE, spa typing, and multilocus sequence typing (MLST).
- Characterization of SCCmec elements and PCR detection of specific genes (arcA, msr(A), mph(B)) and repeat units.
Main Results:
- The predominant PVL-positive MRSA lineage was spa type t044/MLST ST80 (80 isolates).
- Spa type t008/MLST ST8, characteristic of the USA300 caMRSA clone, was identified in 23 isolates, indicating its emergence in Central Europe.
- Other spa types were found sporadically.
Conclusions:
- PVL-positive MRSA ST80 remains the most frequent clone, but the USA300 clone (ST8) is emerging as the second most common.
- Routine PCR detection methods can facilitate the identification of the USA300 clone in clinical settings.
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