To Determine the Feasibility of a Fidaxomicin Study in Neonates and to Assess C. Difficile (Clostridium Difficile) Involvement in the Pathogenesis

An Observational, Non-interventional Study to Determine the Role of Clostridium Difficile in the Pathogenesis of Disease Observed in Neonates and to Investigate the Feasibility of a Potential Study to Evaluate Safety, Efficacy and Pharmacokinetics of Fidaxomicin Oral Suspension in Neonates With Clostridium Difficile Associated Disease (CDAD)

The objective of this multi-center, prospective observational study is to determine the feasibility of a potential interventional study with fidaxomicin. The incidence and clinical aspects of Clostridium difficile infection (CDI) in neonates will be determined, and it will be assessed whether a subgroup can be identified where treatment with fidaxomicin therapy might improve outcome.

Inclusion Criteria:

• Subject is suffering from diarrhea or other signs or symptoms consistent with CDAD (as described in section 5.2.3)
• Presence of either toxin A or B (or both) of C. difficile in the stool within 24 hours prior to enrollment using the C. difficile Quik Chek Complete® diagnostic test, provided by the sponsor

Exclusion Criteria:

Subject will be excluded from participation if any of the following apply:

• Preterm neonates
• Negative C. difficile toxin test