COVID-19 cases by method of transmission

*** The County of Santa Clara Public Health Department discontinued updates to the COVID-19 data tables effective June 30, 2025. The COVID-19 data tables will be removed from the Open Data Portal on December 30, 2025. For current information on COVID-19 in Santa Clara County, please visit the Respiratory Virus Dashboard [<a href="https://sccphd.org/respiratoryvirusdata">sccphd.org/respiratoryvirusdata</a>]. For any questions, please contact [e-mail] *** The dataset provides information about the source of transmission in the COVID-19 cases among Santa Clara County residents. Source: California Reportable Disease Information Exchange Data notes: All cases without a known source of transmission are included in the Unknown/Presumed Community Transmission category, and may be changed as ongoing investigations yield additional information. This table is updated every Thursday.