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Updated: Aug 11, 2026
12:18
Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
Published on: February 10, 2011
First report of a catalase-negative methicillin-resistant Staphalococcus aureus
Xavier Bertrand1, Yves Huguenin, Daniel Talon
1Service d'Hygiène Hospitalière et d'Epidémiologie moléculaire CHU, Besançon 25030, France. daniel.talon@ufc-chu.univ-fcomte.fr
Diagnostic Microbiology and Infectious Disease
|July 11, 2002
Summary
We identified the first catalase-negative methicillin-resistant Staphylococcus aureus (MRSA) strain. This unique MRSA isolate shares characteristics with regional epidemic strains but lacks catalase activity.
Area of Science:
- Microbiology
- Infectious Diseases
- Bacteriology
Background:
- Methicillin-resistant Staphylococcus aureus (MRSA) is a significant public health concern.
- Epidemic MRSA clones pose challenges due to their rapid spread and resistance patterns.
- Catalase activity is a common characteristic used in bacterial identification.
Observation:
- A novel strain of MRSA was isolated and characterized.
- The strain exhibited typical phenotypic and genotypic markers of a prevalent regional MRSA clone.
- A key distinguishing feature was the complete absence of catalase activity.
Findings:
- This represents the first documented case of a catalase-negative MRSA strain.
- The isolate maintains the genetic and phenotypic traits of the dominant epidemic MRSA clone.
- The lack of catalase activity is an unusual deviation from the expected profile of this clone.
Implications:
- This finding may necessitate adjustments in diagnostic algorithms for MRSA detection.
- Understanding the genetic basis for the loss of catalase activity in MRSA is crucial.
- Further research is needed to determine the clinical and epidemiological significance of catalase-negative MRSA.
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