Sequence 6: Treatment C + Treatment B + Treatment A for Healthy Subjects

The main goals of this study are: 1) To assess the relative bioavailability of a single oral dose of 400 mg maribavir commercial (marketed) tablet formulation administered with a low-fat/low-calorie meal relative to administration under fasting conditions. 2) To assess the relative bioavailability of a single oral dose of 400 mg maribavir commercial (marketed) tablet formulation administered with a high-fat/high calorie meal relative to administration under fasting conditions. A single dose of 400 mg maribavir (commercial [marketed] tablet formulation) will be administered orally under 3 different feeding conditions: Fasting (Treatment A), Fed following a low-fat/low-calorie meal (Treatment B), and Fed following a high fat/high-calorie meal (Treatment C). There will be a washout period of a minimum of 72 hours between each single dose of investigational drug (ID) administration on Day 1 in each treatment cycle of 3 days. Pharmacokinetic samples will be collected at pre-dose and up to 36 hours post-dose in each treatment period. Safety and tolerability will be assessed throughout the study by Treatment Emergent Adverse Events (TEAEs), vital signs, electrocardiograms (ECGs), and clinical laboratory evaluations.