Related Experiment Video
Updated: Aug 16, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
Published on: February 9, 2011
Methicillin-resistant Staphylococcus aureus carriage among patients after hospital discharge
Menno R Vriens1, Hetty E M Blok, Ada C M Gigengack-Baars
1University Medical Center Utrecht, Department of Surgery, Utrecht, The Netherlands.
Background And Objective:
At the University Medical Center Utrecht (UMCU), follow-up implies an inventory of risk factors and screening for MRSA colonization among all MRSA-positive patients for at least 6 months. If risk factors or positive cultures persist or re-emerge, longer follow-up is indicated and isolation at readmission. This study investigated how long MRSA-positive patients remained colonized after hospital discharge and which risk factors were important. Furthermore, the results of eradication therapy were evaluated.
Design:
All patients who were positive for MRSA at the UMCU between January 1991 and January 2001 were analyzed regarding carriage state, presence of risk factors for prolonged carriage of Staphylococcus aureus, and eradication treatment.
Results:
A total of 135 patients were included in the study. The median follow-up time was 1.2 years. Eighteen percent of the patients were dismissed from follow-up 1 year after discharge. Only 5 patients were dismissed after 6 months. Among patients with no risk factors, eradication treatment was effective for 95% within 1 year. Among patients with persistent risk factors, treatment was effective for 89% within 2 years.
Conclusions:
Based on these findings, eradication therapy should be prescribed for all MRSA carriers, independent of the presence of risk factors. MRSA-positive patients should be evaluated for 6 months for the presence of risk factors and MRSA carriage. Screening for risk factors is important because intermittent MRSA carriage was found in a significant number of our patients. Patients with negative MRSA cultures and without risk factors for 12 months can be safely dismissed from follow-up.
Insights
Methicillin-resistant Staphylococcus aureus (MRSA) eradication therapy is effective for most carriers, even those with risk factors. Follow-up for MRSA-positive patients should include risk factor screening for at least 12 months.
Area of Science:
- Infectious Diseases
- Clinical Microbiology
- Public Health
Background:
- Methicillin-resistant Staphylococcus aureus (MRSA) poses a significant healthcare challenge.
- Effective management strategies are crucial for reducing MRSA transmission and colonization.
- Hospital follow-up protocols for MRSA-positive patients typically involve risk factor assessment and screening.
Purpose of the Study:
- To determine the duration of MRSA colonization in patients after hospital discharge.
- To identify risk factors associated with prolonged MRSA carriage.
- To evaluate the efficacy of eradication therapy for MRSA carriers.
Main Methods:
- A retrospective analysis of 135 MRSA-positive patients at the University Medical Center Utrecht (UMCU) from 1991 to 2001.
- Assessment of carriage state, risk factors for prolonged carriage, and eradication treatment outcomes.
- Follow-up duration varied based on the persistence of risk factors and MRSA cultures.
Main Results:
- The median follow-up time was 1.2 years, with 18% of patients dismissed after 1 year.
- Eradication therapy was effective in 95% of patients without risk factors within 1 year.
- For patients with persistent risk factors, treatment efficacy was 89% within 2 years.
Conclusions:
- Eradication therapy for MRSA carriers is recommended regardless of risk factor presence.
- A 6-month evaluation for risk factors and MRSA carriage is advised for MRSA-positive patients.
- Patients with negative MRSA cultures and no risk factors for 12 months can be safely discharged from follow-up.
Related Concept Videos
Clinical Significance of Antibiotic Resistance
Mechanism of Antibiotic Resistance in MRSA
Staphylococcal Skin Infections
Healthcare Associated Infections II: Preventive Measures
The best practices for preventing healthcare-associated infections include hand hygiene, patient risk...
Healthcare Associated Infections I: Iatrogenic, Exogenic and Endogenic
HAIs significantly increase the cost of health care. Extended stays in healthcare institutions, increased disability, increased costs of medications, including specialized antibiotics, and prolonged recovery times add to the patient's expenses and the healthcare institution and funding bodies. Common...
Microbiota of the Respiratory Tract