Last verified: August 22, 2026. By Will Tygart. Facility design and EVS only — not clinical treatment, not antibiotic stewardship.
The key facility-layout factor that helps control Clostridioides difficile is a single-patient room with a dedicated toilet. If a private room is not available, cohort only confirmed CDI patients and still give each person a dedicated toilet or commode. Do not share the bathroom with a non-CDI roommate. That is the CDC / SHEA layout answer. Hand hygiene, sporicidal cleaning, and stewardship matter; they are not “layout.”
Spores contaminate toilets, commodes, and high-touch surfaces. A shared toilet is a shared reservoir. Alcohol does not reliably kill spores — specify a staff handwashing sink reachable after doffing PPE, not only a dispenser inside the room.
What to specify or survey
- Private toilet in the patient room (or immediately adjoining, not a shared ward bath)
- Staff handwashing sink after PPE doff
- Gown/glove staging outside the door
- Soiled utility close enough that bedpans are not carried uncovered through clean corridors
- EVS closet / dedicated equipment so the CDI room is not cleaned with the mop that just left a surgical unit
Terminal / sporicidal sequence: terminal cleaning. Room plumbing: FGI guidelines.
LMS trap
Stems that offer “negative pressure,” “HEPA in the waiting room,” or “more air changes” as the C. diff layout answer are wrong. CDI is contact / spore / environment, not an ASHRAE 170 AIIR problem.
Sources: CDC CDI clinical guidance (single-patient room, dedicated toilet, EPA List K) · SHEA/IDSA/APIC 2022 update (private room preferred; dedicated commode if shared).