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Updated: May 26, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
Published on: February 9, 2011
MRSA and non-MRSA otorrhea in children: a comparative study of clinical course
Nathan S Alexander1, Brian D Kulbersh, C Hope Heath
1Pediatric ENT Associates of Alabama, Children's Hospital of Alabama, 1940 Elmer J. Bissell Road, Birmingham, AL 35243, USA.
Objective:
To test the perception that post-tympanostomy tube otorrhea caused by methicillin-resistant Staphylococcus aureus (MRSA) is a more virulent disease than otorrhea caused by other pathogens by analyzing the clinical differences and disease courses in children diagnosed with otorrhea caused by MRSA bacteria vs non-MRSA bacteria.
Design:
Retrospective review.
Setting:
Tertiary children's hospital.
Patients:
We retrospectively examined the medical records of children who presented to a tertiary children's hospital from January 1, 2003, to December 31, 2008, with otorrhea that occurred after tympanostomy tube insertion.
Main Outcome Measures:
Otorrhea culture records were used to group the 1079 patients into those whose otitis media was due to MRSA (n = 170) and those with non-MRSA otitis media (n = 909). From the non-MRSA group, we randomly selected an age-matched group of 170 and examined the differences between the MRSA and age-matched non-MRSA groups in organisms isolated by culture, demographic factors (including type of medical insurance), medical history, treatments, surgical procedures performed, audiometric data, and other admissions for infection-related illnesses.
Results:
The overall incidence of MRSA in this series was about 16% (170 of 1079 patients). Of the 170 eligible children in each age-matched group, 135 with MRSA otorrhea and 141 with non-MRSA otorrhea had data in every category selected for statistical analysis. The groups did not differ significantly in type of insurance; history of tympanostomy tube placement, cholesteatoma, or prematurity; number or type (minor/major) of surgical procedures performed; or risk of subsequent infection-related diagnoses. More patients in the MRSA group received intravenous antibiotic therapy (11% vs 3.6%; P < .001).
Conclusion:
In this study, a diagnosis of otorrhea due to MRSA did not carry an increased risk for surgical procedures or infection-associated sequelae compared with a diagnosis of non-MRSA otorrhea.
Insights
Methicillin-resistant Staphylococcus aureus (MRSA) otorrhea in children does not appear more severe than non-MRSA infections. This study found no increased risk for surgical procedures or long-term complications in MRSA cases.
Area of Science:
- Pediatric Otolaryngology
- Infectious Diseases
- Microbiology
Background:
- Post-tympanostomy tube otorrhea is a common complication in pediatric patients.
- Methicillin-resistant Staphylococcus aureus (MRSA) is a significant pathogen, and its role in otorrhea warrants investigation.
- Clinical perception suggests MRSA otorrhea may be more virulent than that caused by other pathogens.
Purpose of the Study:
- To compare the clinical differences and disease courses of post-tympanostomy tube otorrhea caused by MRSA versus non-MRSA bacteria in children.
- To determine if MRSA otorrhea presents a more virulent clinical picture than otorrhea caused by other bacteria.
Main Methods:
- Retrospective review of medical records from a tertiary children's hospital (January 2003-December 2008).
- 1079 children with post-tympanostomy tube otorrhea were analyzed, with 170 identified as MRSA positive.
- An age-matched cohort of 170 children with non-MRSA otorrhea was selected for comparison of clinical data.
Main Results:
- The incidence of MRSA in post-tympanostomy tube otorrhea was approximately 16%.
- No significant differences were observed between MRSA and non-MRSA groups regarding insurance type, medical history (cholesteatoma, prematurity), surgical procedures, or subsequent infection risk.
- A higher proportion of patients in the MRSA group received intravenous antibiotic therapy (11% vs 3.6%, P < .001).
Conclusions:
- Otorrhea caused by MRSA in children with tympanostomy tubes did not demonstrate increased virulence.
- The study found no greater risk for surgical interventions or infection-associated sequelae in MRSA otorrhea compared to non-MRSA otorrhea.
- Clinical management should consider MRSA but without an assumed increase in disease severity or complications.
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