 6. Have been treated with topical swallowed steroids within the last 6 weeks or systemic steroids within the last 2 months. For participants unable to be off of topical swallowed steroids for six weeks, a 2 week period without treatment with topical swallowed corticosteroids would be acceptable if repeat endoscopy has been performed demonstrating tissue eosinophilia meeting histologic criteria outlined above at the end of the 2 week period. 