Personalized AZithromycin/metronidAZole Therapy in Pediatric Crohn's Disease (CD)

Weeks 4-12: 7.5 mg/kg azithromycin once daily (500 mg/day maximum) for five consecutive days/ week for 4 weeks, and 3 times a week for the following 4 weeks

Weeks 4-12: 20 mg/kg/day of metronidazole (10 mg/kg twice daily to a maximum of 1000 mg/day) for 8 weeks

SOC induction therapy is nutritional therapy (Crohn's disease exclusion diet + partial enteral nutrition) for up to 12 weeks. Induction therapy is as assigned by the treating gastroenterologist prior to study entry.