Isolation Precautions for Patients with Clostridioides difficile Infection

General Recommendations

The Infectious Diseases Society of America (IDSA) recommends that patients with Clostridioides difficile infection (CDI) should be kept in contact precautions until hospital discharge if the institution's CDI rates remain high, based on moderate-quality evidence and representing a strong recommendation 1
The IDSA/SHEA 2018 guidelines suggest that contact precautions should be prolonged until hospital discharge if the institution's CDI rates are high, regardless of symptom resolution, with a strong recommendation and moderate-quality evidence 1

Patients continue to shed C. difficile spores into the environment even after diarrhea resolution, with 49% of rooms of patients with active CDI contaminated with C. difficile, compared to 34% in asymptomatic carriers 2, 3, 4
Spores can persist in the environment and on healthcare workers' hands, facilitating cross-transmission, highlighting the importance of proper hand hygiene and environmental cleaning 2, 3, 4

In institutions with low CDI rates, some may consider lifting contact precautions when the patient has completed specific antimicrobial treatment for CDI, diarrhea has resolved, and at least 48 hours have passed since the last diarrheal stool, although this practice is not supported by the latest IDSA/SHEA guidelines 1
Essential elements of isolation include a private room with a dedicated bathroom to reduce transmission to other patients, use of gloves and gowns by all healthcare workers entering the room, and hand hygiene with soap and water, as alcohol-based hand sanitizers do not eliminate C. difficile spores 1, 2, 3, 4

Assuming the absence of diarrhea means the absence of spore shedding, as patients can continue to contaminate the environment even when asymptomatic, with 29% of CDI cases linked to asymptomatic carriers who shed spores 2, 3, 4
Using alcohol-based hand sanitizers instead of soap and water for hand hygiene, as these do not eliminate C. difficile spores, emphasizing the need for proper hand washing technique 2, 3, 4

The decision to lift isolation precautions should be based on institutional CDI rates, clinical resolution, and patient factors such as incontinence or immunosuppression, with most cases requiring continued precautions until hospital discharge 1
If isolation is lifted before discharge, terminal cleaning with sodium hypochlorite should be ensured to reduce environmental contamination 2, 3, 4

Patients with ileus or toxic megacolon may not have diarrhea but remain highly contagious, necessitating strict contact precautions regardless of the absence of diarrhea, based on guidelines from the IDSA 1
Asymptomatic carriers detected by screening should not routinely influence isolation decisions, although measures to control infections may be effective in reducing transmission, according to the World Journal of Emergency Surgery 2, 3, 4