Streptococcus pseudoporcinus bacteremia in a patient with skin and soft tissue infection. A case report and literature review.

Q2 Medicine Infezioni in Medicina Pub Date : 2023-01-01 DOI:10.53854/liim-3103-14
Michalis Papapanagiotou, Petros Ioannou, Konstantinos Alexakis, Sofia Maraki, Eleni Papadokostaki, Diamantis P Kofteridis
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Abstract

Streptococcus pseudoporcinus is a beta-hemolytic Streptococcus species arranged in short chains, which was first described in 2006. In the last years, there have been several reports of human infections by this bacterium, with five skin and soft tissue infections identified. Herein, a case of S. pseudoporcinus skin and soft tissue infection in a patient, who also developed bacteremia and was successfully treated with intravenous antibiotics, is reported. A 67-year-old man with a history of diffuse large B-cell lymphoma presented to the emergency department because of fever, redness, swelling, and pain in the left lower limb. He was admitted to the medical ward, diagnosed with severe non-purulent skin and soft tissue infection, and treated empirically with intravenous piperacillin/tazobactam at 4.5 gr thrice daily and daptomycin at 10mg/kg once daily. Blood cultures were obtained before the initiation of the antibiotics and grew S. pseudoporcinus. Treatment was de-escalated to ceftriaxone at a dose of 2 gr once daily. He completed two weeks of intravenous antimicrobial treatment. S. pseudoporcinus is an emerging pathogen associated with skin and soft tissue infections, bacteremia, and other invasive, potentially life-threatening infections. Further investigation is warranted to clarify this microorganism's pathogenesis and biological significance.

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皮肤及软组织感染患者的假机会性链球菌菌血症。病例报告及文献复习。
伪机会链球菌(Streptococcus pseudoporcinus)是一种以短链排列的溶血性链球菌,于2006年首次被发现。在过去的几年里,已经有几起人类感染这种细菌的报道,其中有五起皮肤和软组织感染被确认。本文报告一例假机会链球菌皮肤和软组织感染患者,同时发生菌血症,经静脉注射抗生素成功治疗。67岁男性,有弥漫性大b细胞淋巴瘤病史,因左下肢发热、发红、肿胀和疼痛来到急诊科。他被送进病房,诊断为严重的非化脓性皮肤和软组织感染,并经验性地静脉注射哌拉西林/他唑巴坦4.5克,每日三次,达托霉素10mg/kg,每日一次。在抗生素开始前进行血培养,培养出假机会葡萄球菌。治疗逐步升级为头孢曲松,剂量为2克,每日一次。他完成了两周的静脉抗菌治疗。假机会葡萄球菌是一种新兴病原体,与皮肤和软组织感染、菌血症和其他侵袭性、潜在威胁生命的感染有关。需要进一步的研究来阐明这种微生物的发病机制和生物学意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Infezioni in Medicina
Infezioni in Medicina Medicine-Infectious Diseases
CiteScore
8.40
自引率
0.00%
发文量
62
期刊介绍: The Journal publishes original papers, in Italian or in English, on topics concerning aetiopathogenesis, prevention, epidemiology, diagnosis, clinical features and therapy of infections, whose acceptance is subject to the referee’s assessment. The Journal is of interest not only to infectious disease specialists, microbiologists and pharmacologists, but also to internal medicine specialists, paediatricians, pneumologists, and to surgeons as well. The Editorial Board includes experts in each of the above mentioned fields.
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