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If there were a prize given to the first Midpeninsula ZIP code to reach 100% vaccination, it may soon go to 94304, the Palo Alto Hills area where it appears that everyone 12 years old or older has been fully or partially vaccinated.

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CalMatters is a Sacramento-based nonpartisan, nonprofit journalism venture committed to explaining how California's state Capitol works and why it matters. It works with more than 130 media partners throughout the state that have long, deep relationships with their local audiences, including Embarcadero Media.

Jocelyn Dong is the Peninsula editorial director for Embarcadero Media Foundation. In her nearly 25 years with Embarcadero, she has covered health, business, land use, neighborhoods and general news....