[MLVA analysis and virulence profile of community-acquired methicillin-resistant Staphylococcus aureus causing infections in Paraguayan children].

Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) is one of the first causes of skin and soft tissue infections, and can also produce severe diseases such as osteomyelitis and pneumonia. The aim of this descriptive study was to determine the SCCmec type and virulence profile and to study the genetic diversity by MLVA analysis of 21 CA-MRSA isolates that infected Paraguayan children in 2010. The SCCmec type and virulence factors were performed by PCR and genetic diversity by MLVA (multiple locus variable analysis).

[Community-acquired Staphylococcus aureus isolated from Paraguayan children: clinical, phenotypic and genotypic characterization].

Introduction: The prevalence of Staphylococcus aureus in the community has increased, being the pediatric population the most affected. This fact highlights the need for epidemiological surveillance.

Aim: To characterize clinical, phenotypic and genotypic isolates of S.

Methicillin resistance and biofilm production of Staphylococcus epidermidis isolates from infectious and normal flora conjunctiva.

Purpose: Coagulase-negative staphylococci have been reported to be the most frequent cause of bacterial postoperative endophthalmitis. Biofilm formation is the major virulence factor of Staphylococcus epidermidis and is often associated with methicillin resistance. This study aims at evaluating the presence of biofilm-producing and methicillin resistance genes (mecA) in S.

[Demodex spp in chronic blepharitis patients].

Background: Blepharitis is a very common disease in the ophthalmologic practice generally taking a chronic course with intermittent exacerbations. Several studies have linked the presence of Demodex folliculorum with chronic blepharitis, since the mite has the capacity to perpetuate the follicular inflammatory process. The prevalence of infection by Demodex spp.

[Clinically significant coagulase-negative staphylococci: most frequent species and virulence factors].

Background: Coagulase-negative staphylococci have emerged as responsible for a large number of infections. However, it is often difficult to assess its pathogenic role or to discard it as a contaminant.

Aim: The goal of this study was to identify clinically significant coagulase-negative staphylococci to the species level and their virulence factors.