Bacteremia due to Staphylococcus cohnii ssp. urealyticus caused by infected pressure ulcer: case report and review of the literature

Abstract

CONTEXT: Coagulase-negative staphylococci are common colonizers of the human skin and have become increasingly recognized as agents of clinically significant nosocomial infections. CASE REPORT: The case of a 79-year-old male patient with multi-infarct dementia who presented systemic inflammatory response syndrome is reported. This was attributed to bacteremia due to Staphylococcus cohnii ssp. urealyticus, which was grown on blood cultures originating from an infected pressure ulcer. The few cases of Staphylococcus cohnii infection reported in the literature consist of bacteremia relating to catheters, surgical prostheses, acute cholecystitis, brain abscess, endocarditis, pneumonia, urinary tract infection and septic arthritis, generally presenting a multiresistant profile, with nearly 90% resistance to methicillin. CONCLUSIONS: The reported case is, to our knowledge, the first case of true bacteremia due to Staphylococcus cohnii subsp. urealyticus caused by an infected pressure ulcer. It shows that this species may be underdiagnosed and should be considered in the differential diagnosis for communityacquired skin infections. RESUMO CONTEXTO:Staphylococcus coagulase-negativos, colonizadores frequentes da pele humana, têm sido reconhecidos como agentes de infecções nosocomiais. RELATO DE CASO: Relata-se o caso de um paciente de 79 anos com demência vascular que apresentou síndrome da resposta inflamatória sistêmica atribuída a bacteremia por Staphylococcus cohnni ssp. urealyticus, que cresceu em hemoculturas, secundária a uma úlcera de pressão infectada. Os poucos casos de infecção por Staphylococcus cohnii relatados na literatura descrevem bacteremia associada a cateter, próteses cirúrgicas, colecistite aguda, abscesso cerebral, endocardite, pneumonia, infecção do trato urinário e artrite séptica, geralmente apresentando um perfil de multirresistência, com aproximadamente 90% de resistência à meticilina. CONCLUSÕES: O caso relatado é, ao nosso conhecimento, o primeiro de bacteremia verdadeira por Staphylococcus cohnii subsp. urealyticus causada por uma úlcera por pressão, mostrando que esta espécie pode estar subdiagnosticada e deveria ser considerada no diagnóstico diferencial das infecções cutâneas adquiridas na comunidade.

High quality draft genome sequence of Staphylococcus cohnii subsp. cohnii strain hu-01

“…Recently, more cases of Staphylococcus cohnii infection have been reported in the literature. This organism may be responsible for brain abscess, pneumonia, acute cholecystitis, endocarditis, bacteremia, urinary tract infection and septic arthritis [2]. S.…”

“…cohnii is a Gram-positive coccus, coagulase negative and catalase positive, that behaves like a commensal mucocutaneous bacterium [4]. It has more frequently been isolated in hospital than in non-hospital environments [2]. Here we report this draft genome of S.…”

BACTERIAL COMMUNITIES OF THE OYSTERS Crassostrea corteziensis AND C. sikamea OF COSPITA BAY, SINALOA, MEXICO

“…Of all known pathogenic Vibrio of major medical interest listed by Daniels and Shafaie (2000), only V. parahaemolyticus was present in our oyster samples. Among those isolated from surface waters, the coagulase-negative Staphylococcus warneri and S. cohnii are of mild clinical interest as possible sources of nosocomial infections (Martínez and Máttar 2006, Fariña et al 2013, Soldera et al 2013, while Lysobacter spongiicola pertains to a genus of potential importance for its production of several extracellular enzymes (de Bruijn et al 2015), and because several Lysobacter species have been suggested for biological plant disease control (Hashizume et al 2004, Li et al 2008.…”

Efficacy of silver/hydrophilic poly(p-xylylene) on preventing bacterial growth and biofilm formation in urinary catheters

“…urealyticus, and Serratia. 4,5 In the long-term catheterization setting, common uropathogens include E. coli, Pseudomonas aeruginosa, and Proteus mirabilis. 4 CAUTI often leads to the development of a biofilm on the long-term indwelling urethral catheter, which can shield the bacteria from antibiotics and promote further bacterial adhesion.…”