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Case Reports
. 2025 Oct 8:42:e02393.
doi: 10.1016/j.idcr.2025.e02393. eCollection 2025.

Recurrent peritonitis due to Shewanella putrefaciens in a peritoneal dialysis patient

Jorge Iberico Castro  1 , Luis Castañeda Pelaez  1 , Jesús Rojas Jaimes  1 , Elsa Nuñez Infanzón  2 , Delza Tarraga Gonzales  2 , Sergio Ronceros Medrano  1
Affiliations
Case Reports

Recurrent peritonitis due to Shewanella putrefaciens in a peritoneal dialysis patient

Jorge Iberico Castro et al. IDCases. .

Abstract

Shewanella putrefaciens is a gram-negative, nonfermenting, and motile bacillus. It can be found in freshwater, saltwater, and soil. This case report presents a 36-year-old man referred from the nephrology service with recurrent secondary peritonitis associated with peritoneal dialysis. Multidrug-resistant S. putrefaciens was isolated from peritoneal fluid. The patient showed improvement after Piperacillin/tazobactam treatment. Preventive measures against nosocomial infections should be comprehensive, including aseptic techniques, regular monitoring, appropriate antibiotic treatment, and timely replacement of devices associated with infection risk. In our case, the favorable outcome was attributed to antibiotic therapy and the replacement of dialysis devices.

Keywords: Shewanella putrefaciens; antibiotic resistance; nosocomial infections.

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Conflict of interest statement

No author has any conflicts of interest.

Figures

Fig. 1
Fig. 1
On the left is a culture of S. putrefaciens on Trypticase Soy Agar medium. On the right, Gram-negative bacilli were observed in Gram stain at 1000X.
See this image and copyright information in PMC

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