Epidemiological surveillance for community-associated methicillin-resistant Staphylococcus aureus revealed prevalences of 33% and 13% in pediatric and adult patients, respectively, in Cordoba, Argentina, in 2005. This study describes for the first time the emergence and dissemination of the sequence type 5 (ST5) lineage as the most prevalent clone (89%) (pulsed-field gel electrophoresis type I-...

Etiological factors vary with age, source of infection (community vs. hospital acquired pneu‐ monia) and underlying host defects (e.g immunodeficiency). Viruses are the most common etiological factors in preschool children, although in many cases more than one causative agents can be identified. There are several emerging pathogens in community acquired pneumonia in children: virulent strains o...

HIV-infected persons are at heightened risk for recurrent community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) infections, but there are limited data regarding the molecular characterization of these events. We describe an HIV-infected patient with 24 soft tissue infections and multiple colonization events. Molecular genotyping from 33 nonduplicate isolates showed all strain...

Staphylococcal cassette chromosome mec (SCCmec) types and Panton-Valentine leukocidin (PVL) gene carriage were compared among suspected community-associated methicillin-resistant Staphylococcus aureus MRSA (CA-MRSA) and health care-associated MRSA (HA-MRSA) isolates. CA-MRSA isolates carried the SCCmec type IV complex, and most were PVL positive. The HA-MRSA isolates carried the SCCmec type II ...

The test is an application of the method originally described by Boyden (1951) and adapted by Stavitsky and Arquilla (1958). Sera which contain anti-Panton-Valentine leucocidin agglutinate the prepared red cells, often to a very high dilution, and this has provided a useful serological test for the diagnosis of staphylococcal disease in orthopaedic lesions. The test is quicker as a routine inve...

The sequence of methicillin-resistant Staphylococcus aureus strain B6 (sequence type 30 [ST30], spa type t433, staphylococcal chromosomal cassette mec element [SCCmec] type IVc, Panton-Valentine leukocidin [PVL] positive), isolated from a pediatric patient with a lung infection in Niterói, Rio de Janeiro, Brazil, is described here. The draft genome sequence includes a 2.8-Mb chromosome, accompa...