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. 2021 Feb 25;9(3):190. doi: 10.3390/vaccines9030190

Figure 2.

Figure 2

End-to-end steps for vaccine manufacturing and supply. The manufacture of a vaccine requires the completion of a sequence of activities starting from the receipt of raw materials and components through the release of a dose that is ready to be administered to a patient. At different steps of the process, inventory (I) may be held until the completion of the preceding step.