[Community-acquired Staphylococcus aureus bacteremia: 17 years of experience in Argentine children].

Background: Community-acquired methicillin-resistant Staphylococcus aureus (CAMRSa) emerged in recent years. Few studies analyzed the impact of these infections in bacteremias (B).

Objectives: To analyze clinical, epidemiological, microbiological and outcome of CASa B between two periods (Period I: 1993-2004, and Period II: 2004-2007).

Galactomannan antigen detection in the diagnosis of invasive aspergillosis.

Invasive aspergillosis is a serious and lethal infection among immunocompromised patients, with reported mortality rates as high as 74-92%. The high mortality is related to the severe immunosuppression experienced by these patients as well as the difficulties for physicians in arriving at a timely diagnosis. Definitive diagnostic procedures (tissue biopsy for histopathology and culture) are often precluded by severe cytopenias and coagulation abnormalities.