Vaccine distribution is being organized and carried out by the State of California and the Santa Clara County Health Department which hold the authority and responsibility to manage this important component of the health and safety of our community. The County and State are using a "phase" and "tiered" system to guide the process, directing that the most vulnerable and health care workers closest to COVID be given the opportunity to get the currently limited doses of the vaccine first. As the first phase is completed, then the focus will switch to the next phase.
Here is a link to the County's vaccine plan with more information: https://www.sccgov.org/sites/covid19/Pages/COVID19-vaccine-information-for-public.aspx