DNA-directed DNA polymerase x GR

To test the safety of Xerese (acyclovir and hydrocortisone)Cream 5%/1% for the treatment of recurrent cold sores in children ages 6-11yrs after 5 days of treatment.

The purpose of this study is to evaluate the episode duration of a herpes labialis recurrence in immunocompromised patients treated with ME-609 or Acyclovir.