 Subjects under the age of 18 years will have a total of four blood samples drawn. The first will be drawn at pre-application and the second will be drawn at 4 hours 5 minutes after completion of application of the topical cream on Study Day 1. The third will be drawn pre-application and the fourth at 4 hours 5 minutes after completion of application of the topical cream on Study Day 20. Subjects who receive Paromomycin Topical Cream are not expected to have blood levels of gentamicin, but as the study is blinded, plasma specimens will be tested for both paromomycin and gentamicin. 