Excel · dataset · 2026
COVID-19 Probable Cases (ARCHIVED)
Listed in California Open Data
__Note:__ This dataset is no longer being updated due to the end of the COVID-19 Public Health Emergency. __Note:__ On 2/16/22, 17,467 cases based on at-home positive test results were excluded from the probable case counts.
Description
Per national case classification guidelines, cases based on at-home positive results are now classified as “suspect” cases. The majority of these cases were identified between November 2021 and February 2022.
CDPH tracks both probable and confirmed cases of COVID-19 to better understand how the virus is impacting our communities. Probable cases are defined as individuals with a positive antigen test that detects the presence of viral antigens. Antigen testing is useful when rapid results are needed, or in settings where laboratory resources may be limited.
Read the rest (4 more)
Confirmed cases are defined as individuals with a positive molecular test, which tests for viral genetic material, such as a PCR or polymerase chain reaction test. Results from both types of tests are reported to CDPH. Due to the expanded use of antigen testing, surveillance of probable cases is increasingly important.
The proportion of probable cases among the total cases in California has increased. To provide a more complete picture of trends in case volume, it is now more important to provide probable case data in addition to confirmed case data. The Centers for Disease Control and Prevention (CDC) has begun publishing probable case data for states.
Testing data is updated weekly. Due to small numbers, the percentage of probable cases in the first two weeks of the month may change. Probable case data from San Diego County is not included in the statewide table at this time.
For more information, please see cdph.ca.gov/Programs/CID/DCDC/Pages/COVID-19/Probable-Cases.aspx
Links
Get the data
- All resource data data.chhs.ca.gov/dataset/bb31bcdf-2085-4b47-92aa-13cdd6b37435/resource/07a5f9b7… ↗
download · from data ca gov
- COVID-19 Probable Cases data.chhs.ca.gov/dataset/bb31bcdf-2085-4b47-92aa-13cdd6b37435/resource/e787c00b… ↗
download · from data ca gov
- COVID-19 Probable Cases - Data Dictionary data.chhs.ca.gov/dataset/bb31bcdf-2085-4b47-92aa-13cdd6b37435/resource/685bc6af… ↗
download · from data ca gov
Where it is published
- California Open Data dataset page data.ca.gov/dataset/covid-19-probable-cases-archived ↗
landing page · from data ca gov
Documentation and papers
- Publisher page cdph.ca.gov/Programs/CID/DCDC/Pages/Immunization/ncov2019.aspx ↗
documentation · from data ca gov
Catalogue records · 1
- CKAN API data.ca.gov/api/3/action/package_show?id=2a78ac8a-4d81-4e5c-a4d8-52536cdda… ↗
metadata API · from data ca gov
Topics
- Stated by source
- COVID-19 · Health and Human Services
- From keywords
- Medicine & Health
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| California Open Data | 2a78ac8a-4d81-4e5c-a4d8-52536cdda2de | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| concepts[disease].local:disease:disease | enrichment · data ca gov | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[field].local:field:medicine-health | mapping · data ca gov | connector:data_ca_gov@1.0.0 | |
| concepts[modality].local:modality:tabular | enrichment · data ca gov | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[topic].ckan_group:data_ca_gov:covid-19 | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| concepts[topic].ckan_group:data_ca_gov:health-human-services | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| created_date | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| description | source · data ca gov | connector:data_ca_gov@1.0.0 | /notes |
| license_text | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| publication_date | source · data ca gov | connector:data_ca_gov@1.0.0 | |
| title | source · data ca gov | connector:data_ca_gov@1.0.0 | /title |
| updated_date | source · data ca gov | connector:data_ca_gov@1.0.0 |