Table 1.

Clinical and microbiological characteristics of patients with infections due to Comamonas kerstersii

Case	Age (yr), sexa	Clinical presentation	Underlying disease(s)	Predisposing condition(s)	Identified pathogens	Antibiotic treatment
1	43, F	Febrile syndrome, abdominal pain	Ovarian tumor with peritoneal metastases	Sigmoid perforation by foreign body (biliary stent), rectovaginal fistula, and colostomy	Escherichia coli, Bacteroides fragilis, Comamonas kerstersii	Ampicillin-sulbactam followed by piperacillin-tazobactam and then ertapenem
2	48, M	Febrile syndrome, abdominal pain for 3 days	No underlying disease	Perforated appendix	Streptococcus anginosus group, Aeromonas hydrophila group, Escherichia coli, Comamonas kerstersii	Ampicillin-sulbactam, ciprofloxacin, and then amoxicillin-clavulanic acid
3	10, F	Abdominal pain for 3 days, bilious vomiting, and febrile events	No underlying disease	Perforated gangrenous appendix	Streptococcus anginosus group, Escherichia coli, Comamonas kerstersii	Ampicillin + metronidazole + gentamicin and then amoxicillin-clavulanic acid
4	21, F	Abdominal pain for 3 days associated with vomiting	No underlying disease	Perforated gangrenous appendix	Citrobacter amalonaticus, Comamonas kerstersii	Ampicillin + metronidazole + gentamicin

^aF, female; M, male.