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Updated: Aug 10, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
Published on: February 9, 2011
Prevalence of staphylococcal zoonosis in pyogenic skin infections
1Institute of Preventive Medicine, Public Health Laboratories and Food (Health) Authority, A. P., Hyderabad, India.
Abstract:
S. aureus aetiology was found in 76.47% of the 102 pyoderma cases under study, with a high frequency of incidence in children below 5 years of age. The majority of the S. aureus isolates was nontypable (50.0%) and among the typable strains, phage group-III (31.0%), Group-I (20.7%) and a mixed phage group (34.5%) were predominant. 28.2% of the isolates were S. aureus var. bovis and 2.6% were S. aureus var. canis subgroups. Zoonoses in staphylococcal pyogenic skin infections were proved in 9 of the cases, which showed the history of direct animal contact supported by the isolation of S. aureus of animal host origin. Dogs, cattle and poultry were found to be the most important reservoirs transmitting S. aureus to humans, with folliculitis, furunculosis, impetigo as the frequent clinical manifestations.
Insights
Staphylococcus aureus is the primary cause of pyoderma, especially in young children. Zoonotic transmission from animals like dogs and cattle contributes to skin infections in humans.
Area of Science:
- Microbiology
- Dermatology
- Zoonotic Diseases
Background:
- Pyoderma is a common bacterial skin infection.
- Staphylococcus aureus is a significant pathogen in skin infections.
- Understanding the epidemiology and sources of S. aureus is crucial for public health.
Purpose of the Study:
- To investigate the aetiology of pyoderma.
- To characterize Staphylococcus aureus isolates.
- To identify potential zoonotic sources of S. aureus skin infections.
Main Methods:
- Bacteriological analysis of pyoderma cases.
- Phage typing and biotyping of S. aureus isolates.
- Epidemiological investigation including animal contact history.
Main Results:
- Staphylococcus aureus accounted for 76.47% of pyoderma cases, predominantly in children under 5.
- Most S. aureus isolates were nontypable (50%); predominant phage groups were III, I, and mixed.
- Subgroups S. aureus var. bovis (28.2%) and S. aureus var. canis (2.6%) were identified. Zoonotic transmission was confirmed in 9 cases, with dogs, cattle, and poultry as key reservoirs. Folliculitis, furunculosis, and impetigo were common clinical presentations.
Conclusions:
- Staphylococcus aureus is the leading cause of pyoderma, with a high incidence in young children.
- Animal contact represents a significant risk factor for acquiring S. aureus skin infections.
- Public health strategies should address zoonotic transmission of S. aureus.
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