This resource is aimed to provide countries operational considerations on choosing an appropriate COVID-19 immunization delivery strategy to enhance vaccine utilization at service points and ensure high uptake in specific populations, particularly in groups that are higher risk for severe outcomes from COVID-19. See also: Handling, storing and transporting Pfizer BioNTech COVID-19 Vaccine COMIRNATY® (Tozinameran) https://www.technet-21.org/en/library/main/7210-handling,-storing-and-transporting-pfizer-biontech%20covid-19-vaccine-comirnaty%C2%AE-(tozinameran)