Fecal Microbiota Transplantation for Carbapenem-resistant Enterobacteriaceae

We will include adult inpatients ≥18 years positive for CRE of any strain and resistance mechanism in rectal surveillance stool samples, with or without CRE clinical samples. We will mandate a positive rectal swab within one week before randomization. Several exclusion criteria may change throughout the patients' hospitalization and we will follow-up patients for these criteria until reaching eligibility or not (designed as (for follow-up)). Non-eligible patients discharged will be re-evaluated for inclusion when re-admitted. We will exclude: * Pregnant women * Patients with severe neutropenia (\<100/µl) (for follow-up) * Severe GVHD involving the gastrointestinal involvment (for follow-up) * Patients with inflammatory bowel disease (Crohn's or ulcerative colitis) * Patients with intestinal perforation or severe abdominal infection (for follow-up) * Patients carrying a colostomy, ileostomy or similar * Inability or contra-indication to take oral medications (intestinal obstruction, suspected perforation, peritonitis) (for follow-up) * Severe food allergies * Severe diarrhea (for follow-up) * Inability to provide informed consent (for follow-up) * Refusal of primary care physician * Patients treated with antibiotics within the 2 days before fulfilling all other eligibility criteria (for follow-up)