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Updated: Dec 25, 2025
Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA
Published on: February 9, 2011
Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) clones from Paraguayan children
Fátima Rodriguez1, Claudia Salinas2, Silvina Fernandez3
1Instituto de Investigaciones en Ciencias de la Salud, Universidad Nacional de Asunción. San Lorenzo, Paraguay. farrodriguez288@gmail.com.
Introduction:
Staphylococcus aureus is considered one of the most important human pathogens, and its levels of resistance to methicillin have increased even in strains isolated from people without nosocomial risk factors. Molecular analysis is essential for understanding the patterns of dissemination. The objective of this study was to identify community-acquired methicillin-resistant S. aureus (CA-MRSA) clones that infected Paraguayan children patients in two periods of time.
Methodology:
An observational, descriptive study was designed to determine the genetic variability of 115 isolates of CA-MRSA recovered from children who attended four reference centers in Paraguay between 2009-2010 and 2012-2013.
Results:
The combined use of Pulsed Field Gel Electrophoresis (PFGE), Multi-Locus Sequencing Typing, Multi-Locus Variable Analysis (MLVA) and Spa typing techniques allowed the identification of two dominant clones: ST30-IV-t019 (77%) and ST5-IV-t311 (10%), and the establishment of the former as the leading cause of CA-MRSA infections in children during the study period.
Conclusions:
This is the first study that provides epidemiological information as well as microbiological and molecular characteristics of CA-MRSA isolates recovered from children from Asunción and the Central Department of Paraguay.
Insights
Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) infections in Paraguayan children are primarily caused by the ST30-IV-t019 clone. This study identified dominant CA-MRSA clones in children over two time periods.
Area of Science:
- Microbiology
- Infectious Diseases
- Molecular Epidemiology
Background:
- Staphylococcus aureus is a major human pathogen with increasing methicillin resistance.
- Methicillin-resistant Staphylococcus aureus (MRSA) infections are a growing concern, even in the community setting.
- Understanding the molecular epidemiology of community-acquired MRSA (CA-MRSA) is crucial for effective control.
Purpose of the Study:
- To identify community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) clones in Paraguayan children.
- To analyze the genetic variability of CA-MRSA isolates over two distinct time periods.
- To provide molecular and epidemiological data on CA-MRSA infections in pediatric populations in Paraguay.
Main Methods:
- Observational, descriptive study design.
- Analysis of 115 CA-MRSA isolates from children between 2009-2010 and 2012-2013.
- Utilized Pulsed Field Gel Electrophoresis (PFGE), Multi-Locus Sequencing Typing, Multi-Locus Variable Analysis (MLVA), and Spa typing.
Main Results:
- Identified two dominant CA-MRSA clones: ST30-IV-t019 (77%) and ST5-IV-t311 (10%).
- Established ST30-IV-t019 as the predominant clone responsible for CA-MRSA infections in the studied pediatric population.
- Demonstrated the genetic landscape of CA-MRSA in Paraguayan children during the specified periods.
Conclusions:
- This study provides the first epidemiological and molecular characterization of CA-MRSA isolates from children in Asunción and the Central Department of Paraguay.
- The findings highlight the significant prevalence of the ST30-IV-t019 clone in pediatric CA-MRSA infections.
- The molecular data are essential for understanding CA-MRSA dissemination patterns in this region.
