Pre-exposure prophylaxis (PrEP) uptake and service delivery adaptations during the first wave of the COVID-19 pandemic in 21 PEPFAR-funded countries. oleh Michael Kerzner, Anindya K De, Randy Yee, Ryan Keating, Gaston Djomand, Sharon Stash, Sangeeta Rana, Allison Kimmel, Robyn Eakle, Sara Klucking, Pragna Patel, PEPFAR HIV Pre-exposure Prophylaxis Collaborators