The purpose of this study is to determine the effect of nitazoxanide suspension in treating diarrhea caused by enteric viruses in children less than 12 years of age.

Inclusion Criteria:

• Age <12 years.
• Patients with diarrhea (defined as 3 or more stools per day with liquid or semi-solid consistency, the number and consistency of stools being unusual for that person).
• Stool positive for adenovirus, norovirus or rotavirus by ELISA.

Exclusion Criteria:

• Females who are pregnant, suspected of being pregnant or breastfeeding.
• Other identified causes of diarrhea at screening.
• Serious systemic disorders incompatible with the study.