There are 2 panels in this study. In Panel A, POS IV will be evaluated in ≥8 participants, including ≥5 who are <3 months of age and ≥3 who are 3 months to <2 years of age. In Panel B, both POS IV and POS PFS will be evaluated in ≥14 participants, including ≥3 who are <3 months of age and ≥5 who transition to the PFS formulation of POS.
This study aims to estimate the pharmacokinetics (PK) of posaconazole (POS, MK-5592) intravenous (IV) and powder for oral suspension (PFS) formulations in pediatric participants <2 years of age with invasive fungal infection (IFI).