Catalase-negative Staphylococcus aureus isolated from a leg ulcer

Catalase-negative, methicillin-resistant Staphylococcus aureus as a cause of septicemia

“…To this date, ten cases of infection due to catalasenegative Staphylococcus aureus have been published, eight of them in humans (1,2,3,7,8,10,11,12). This is the first case of septicemia due to catalase-negative S. aureus reported in Brazil, and the fourth case that has been reported in the literature (3,11,12).…”

Catalase-negative Staphylococcus aureus: a rare cause of catheter-related bacteremia

“…In our case, the isolate was responsible for fever which subsided after removal of the catheter and after oxacillin treatment, but the patient was immunosuppressed because of cancer. Reports in which such isolates were responsible for infection in immunocompetent subjects are very rare [3,4], and represent, at best, a very small minority of the 36 other published cases of human carriage or infection with catalase‐negative S. aureus that we have retrieved from the biomedical literature, and which we have summarized in Table 1[3–16]. The uncertainties regarding the pathogenic role of this organism seem to us to constitute a good reason to publish observations such as ours.…”

Aislamiento e identificación de una cepa de Staphylococcus aureus meticilino resistente y catalasa negativo

“…Staphylococcus aureus expresa varios factores de virulencia, incluyendo la catalasa, que es considerada una característica de género en su identificación (2,3) , excepto especies anaeróbicas de Staphylococcus saccharolyticus y S. aureus subes anaerobius (4) . Sin embargo, algunos aislamientos de S. aureus catalasa negativo han sido comunicaados en humanos, desde 1955, en muestras de sangre, catéter, ulceras, aspirado traqueal, brotes intrahospitalarios, entre otros (5)(6)(7)(8) . A través de la presente carta, deseamos informar a la comunidad científica nacional e internacional acerca de una cepa de Staphylococcus aureus meticilino resistente catalasa negativo.…”