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California's Algorithm Considered ZIP Codes in Vaccine Distribution, Allegedly Excluding Low-Income Neighborhoods and Communities of Color

AI Incident Database · article · May 6, 2021 · UTC

California's vaccine-distribution algorithm used ZIP codes as opposed to census tracts in its decision-making, which critics said undermined equity and access for vulnerable communities who are largely low-income, underserved neighborhoods with low Healthy Places Index scores.

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recordType
incident-report
evidenceStatus
reported
region
Global

Reported occurrence date: 2021-02-12T00:00:00.000Z

Evidence & attribution

AI Incident Database, Responsible AI Collaborative; McGregor (2021), Preventing Repeated Real World AI Failures by Cataloging Incidents. Incident-specific contributor credits are available at each citation link. Metadata adapted; article text excluded.

License: CC BY-SA 4.0

First collected: 2026-09-19T22:50:59.123Z. This is not the publication date.

Observed changes

AIIC observation times, not verified publisher revision times. Up to eight recent revisions.

2026-09-20T23:22:28.549Z

  • publishedAt: Not provided2021-05-06T00:00:00.000Z