What determines when Colorado moves from one phase to the next?

In the early stages of vaccine distribution, health care providers will provide information to the Colorado Department of Public Health and Environment on how much vaccine they need and how many people are getting vaccinated. Once we believe we have distributed enough vaccine to those who want a vaccine in the first phase, we will move to the next phase. The speed at which we are able to move through the phases will largely depend on the supply of vaccine.

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