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Updated: Sep 15, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
Published on: February 9, 2011
Abstract:
Over 50 per cent of all staphylococcic infections are hospital-acquired. In 92 per cent of hospital-acquired infection, the organism is resistant to penicillin, and in 74 per cent to tetracycline.Chloramphenicol, bacitracin, novobiocin and erythromycin are the drugs of choice for therapy. There was good correlation between clinical response and antibiotic therapy selected on the basis of results of organism sensitivity tests done by the agar diffusion technique.Cross-resistance among the tetracyclines averaged 94 per cent. Erythromycin and magnamycin showed similar pattern. Mortality in infants less than two months old was 7.8 per cent as compared with 1.1 per cent in older children. Death was related either to pneumonia or to septicemia in the ten fatalities recorded in this series.
Insights
Hospital-acquired staphylococcic infections are common and often resistant to penicillin and tetracycline. Chloramphenicol, bacitracin, novobiocin, and erythromycin are effective treatments, with better outcomes in older children.
Area of Science:
- Clinical Microbiology
- Infectious Diseases
- Pediatrics
Background:
- Hospital-acquired staphylococcic infections represent a significant clinical challenge.
- High rates of antibiotic resistance, particularly to penicillin (92%) and tetracycline (74%), complicate treatment.
- Staphylococcal infections pose a greater mortality risk to young infants (<2 months) compared to older children.
Purpose of the Study:
- To evaluate the prevalence and antibiotic resistance patterns of hospital-acquired staphylococcic infections.
- To identify effective therapeutic antibiotic options and assess treatment correlation with sensitivity testing.
- To determine the impact of age on mortality rates in staphylococcal infections.
Main Methods:
- Analysis of hospital-acquired staphylococcic infection cases.
- Determination of antibiotic resistance profiles using the agar diffusion technique.
- Correlation of clinical response with antibiotic therapy guided by sensitivity testing.
Main Results:
- Over 50% of staphylococcic infections were hospital-acquired, with high resistance to penicillin and tetracycline.
- Chloramphenicol, bacitracin, novobiocin, and erythromycin demonstrated efficacy.
- Mortality was significantly higher in infants under two months (7.8%) versus older children (1.1%), often due to pneumonia or septicemia.
Conclusions:
- Antibiotic sensitivity testing is crucial for effective management of hospital-acquired staphylococcic infections.
- Chloramphenicol, bacitracin, novobiocin, and erythromycin are recommended therapeutic agents.
- Vigilance and prompt treatment are essential for reducing mortality in vulnerable infant populations.
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