Clostridioides difficile Infection

Patient Population: Pediatric
Condition Major Pathogens  First-choice Therapy Alternative Therapy Comments

Clostridioides difficile infection - initial episode, non-severe 

Non-severe disease defined by lack of the following:  

WBC ≥ 15,000 cells/mL 

Creatinine > 1.5x pre-disease baseline 

Hypotension or shock, ileus, or megacolon  

Clostridioides difficile 

Metronidazole  
7.5 mg/kg/dose (max 500 mg/dose) enterally  4 times daily  

OR 

Vancomycin 
10 mg/kg/dose (max 125 mg/dose) enterally 4 times daily  

Note: IV Metronidazole is suboptimal for C. difficile treatment compared to enteral metronidazole 

If failure to respond to Metronidazole in 5-7 days, switch to above Vancomycin regimen 

 

Discontinue inciting antimicrobials as soon as possible 

Avoid re-testing unless symptoms of C. difficile infection recur 

Oral vancomycin is usually preferred in pediatric oncology patients or stem cell transplant recipients 

Duration: 10 days 

Clostridioides difficile infection - initial episode, severe or fulminant  

Severe disease defined by: 

WBC ≥ 15,000 cells/mL 

OR 

Creatinine > 1.5x pre-disease baseline  

Fulminant disease defined by:  

Hypotension or shock, ileus or  megacolon 

Same

Vancomycin
10  mg/kg/dose (max 500 mg/dose) enterally 4 times daily 

ADD 

Metronidazole
10 mg/kg/dose (max 500 mg/dose) IV q8h for fulminant disease (see 1st column for definition) 

Alternative administration for Vancomycin, consider when ileus is present:  

Vancomycin rectal enema 
500mg in 100mL normal saline with volume based on age:  
1-3 years old: 50 ml 
4-9 years old: 75 ml 
>10 years old: 100ml 
Administer 4 times daily 

Consider ID consult, particularly if not improving with initial therapy 

Discontinue inciting antimicrobials as soon as possible 

Avoid re-testing unless symptoms of C. difficile infection recur 

Duration: 10 days 

Clostridioides difficile infection - first recurrence, non-severe 

Definition: Re-appearance of symptoms and positive assay  within 2-8 weeks after completion of therapy for prior episode for which symptoms and signs had resolved 

Same

Metronidazole
7.5 mg/kg/dose (max 500 mg/dose) enterally 4 times daily 

OR 

Vancomycin
10 mg/kg/dose (max 125 mg/dose) enterally 4 times daily 

Consider Fidaxomicin in consultation with ID for recurrence in pediatric oncology patients or stem cell transplant recipients  Duration: 10 days 

Clostridioides difficile infection - second or subsequent recurrence 

Definition: Re-appearance of symptoms and positive assay  within 2-8 weeks after completion of therapy for prior episode for which symptoms and signs had resolved 

Same

Vancomycin taper and pulse per the following regimen:  

10 mg/kg/dose (max 125 mg/dose) enterally 4 times daily x 10 days 

THEN bid x 7 days 

THEN daily x 7 days 

THEN every other day x 8 days (4 doses)  

THEN every 3 days x 2 weeks 

Consider Fidaxomicin in consultation with ID for recurrence in pediatric oncology patients or stem cell transplant recipients 

Consider evaluation for fecal microbiota transplantation in clinically appropriate situations 

ID and GI consults recommended for second recurrence 

Duration: per taper schedule 

References

McDonald LC, et al. Clinical practice guidelines for Clostridium difficile infection in adults and children: 2017 update by the Infectious Diseases Society of America (IDSA) and Society for Healthcare Epidemiology of America. Clin Infect Dis 2018;66:e1-e48. 

Diorio C, et al. Guideline for the management of Clostridium difficile infection in children and adolescents with cancer and pediatric hematopoietic stem-cell transplantation recipients. J Clin Oncol 2018; 36:3162-71. 

American Academy of Pediatrics. In: Kimberlin DW, Barnett ED, Lynfield R, Sawyer MH, eds. Red Book: 2021 Report of the Committee on Infectious Diseases. 32nd ed. Elk Grove Village, IL: American Academy of Pediatrics; 2021.  

Davidovics ZH, et al. Fecal microbiota transplantation for recurrent Clostridium difficile infection and other conditions in children: a joint position paper from the North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition and the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition. J Pediatr Gastroenterol Nutr 2019;68:130-143. 

Pediatric Empiric Antimicrobial Therapy Guidelines

This is a subsection of the UCSF Benioff Children’s Hospitals Empiric Antimicrobial Therapy Guidelines, developed by the Pediatric Antimicrobial Stewardship Programs at each campus to inform initial selection of empiric antimicrobial therapy for children at the UCSF Benioff Children’s Hospitals and affiliated outpatient sites. 

These are guidelines only and not intended to replace clinical judgment. Modification of therapy may be indicated based on patient comorbidities, previous antibiotic therapy or infection history. Doses provided are usual doses but may require modification based on patient age or comorbid conditions. Refer to Pediatric Antimicrobial Dosing Guideline for further guidance on dosing in children, and Neonatal Dosing Guideline for infants < 1 month of age. Consult a pediatric pharmacist for individualized renal or hepatic dose adjustment. Durations provided are usual recommendations for patients who are responding appropriately to therapy. For additional guidance, please contact Pediatric Infectious Diseases (ID) or the Pediatric Antimicrobial Stewardship Program (ASP) at the campus where your patient is receiving care.  

For questions or feedback about these guidelines, please email primary content owners, Rachel Wattier, Pediatric ASP Medical Director at BCH SF and Prachi Singh, Pediatric ASP Medical Director at BCH OAK. 

The content of these guidelines was updated in July 2021. See Summary and Rationale for Changes (password login to Box needed) for detailed explanations of the content changes.