Eligible subjects will be randomized to receive VALTREX 1g or placebo once daily for 60 days in a two-way crossover study with a washout period of 7 days in between.
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Mean Percent Days of Total Shedding (Clinical and Subclinical) as Determined by Type-specific Polymerase Chain Reaction (PCR) Assay for Herpes Simplex Virus Type 2 (HSV-2)
Timeframe: Up to 60 days in each treatment period (Up to 148 days)