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- The first confirmed case was in Santa Clara 1/31/20.
- The first death was also in Santa Clara 3/10/2020.
- The second county to record a confirmed case was San Mateo The first death was also in Santa Clara 3/10Mateo on 3/16/2020.
- There was an uptick in confirmed cases in Sonoma starting afound 6/29/2020
- There was an uptick in confirmed cases in Marin starting around 7/3/2020.
bubbles sized by population density for CA Counties and colored by per capita income (Jan 25, 2020 - Apr 30, 2020)
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