LOS ANGELES (AP) — California is changing up the way it is delivering coronavirus vaccines, moving to a more centralized system that is expected to streamline appointment sign-up, notification, and eligibility for nearly 40 million residents who want to know when they can get a shot and where.

But the administration of Gov. Gavin Newsom provided few details Tuesday. Counties, which have been leading the vaccine effort along with hospital and health care systems, were cautious about what to expect and said they need more information.

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