COVID-19
COVID-19 is a highly contagious respiratory coronavirus that first appeared in the United States in 2020. Its symptoms are similar to the flu: fever, congestion, sore throat and fatigue. People also sometimes report losing their sense of smell and taste when they are infected.
Most people recover at home from COVID-19, although people ages 65+ and the immunocompromised are more vulnerable to serious health problems from the virus, including death.
Vaccination is the best defense against serious illness from COVID-19. We recommend everyone stay up-to-date on their COVID-19 vaccinations and get booster shots when eligible.
People with private health insurance should see their regular healthcare providers for COVID-19 related services. Contra Costa Health is committed to equity and will continue to provide COVID-19 related services to community members who have Medi-Cal and those who do not have access to health care or coverage.
People without insurance and those with Medi-Cal can make an appointment to get free COVID-19 vaccinations at our Public Health Immunization Clinics located throughout the county. People with appointments are prioritized, so scheduling in advance is encouraged. To schedule an appointment, call us at 925-608-5350 or click the button below to book an appointment online.
Wastewater Surveillance
Last Update: 10/31/25 | Overview of last 21 days
| Sewershed / Region | Level | Trend | % Change |
|---|---|---|---|
| Central Contra Costa | N/A | Decrease | -31% |
| Pittsburg/Antioch/Bay Point | N/A | Plateau | 17% |
| West Contra Costa | N/A | Plateau | 2% |
| Bay Area | Very Low | Decrease | -63% |
*Updated weekly on Fridays
Resources
- COVID-19 Data in California
- Planning for a Future with COVID-19
- Easy Access to Getting Care in Contra Costa
- Easy Access to Getting Care in Contra Costa - Spanish
- Frequently Asked Questions about COVID-19 Vaccination (CDC)
- COVID Travel Recommendations (CDC)
- State and Local Fiscal Recovery Plan 2025 Report (CCH)