Helcococcus spp. are Gram-positive, catalase-negative, facultatively anaerobic cocci that are associated with wound and prosthetic joint infections as well bacteremia and empyema.Five Helcococcus spp. strains were isolated from our patient population, including 2 strains of Helcococcus kunzii from trauma-associated wounds, 2 Helcococcus sueciensis strains from blood and abscess, and a novel Helcococcus spp. strain from blood associated with urosepsis.
Molecular characterization of a catalase-negative methicillin-susceptible Staphylococcus aureus subsp. aureus strain collected from a patient with cutaneous abscess.
The PerR-regulated katA gene encodes the sole catalase of S. aureus, which is an important starvation survival determinant but is surprisingly not required for pathogenicity in a murine skin abscess model of infection.
Five male patients from four different families presented with a clinical record of chronic granulomatous disease (CGD): recurrent infections of the skin and/or respiratory tract with catalase-positive microorganisms, sometimes in combination with granulomata and/or abscesses in various organs.