Concord Disease Reporting & Quarantine Guide

Public Health and Welfare California 4 Minutes Read · published February 21, 2026 Flag of California

In Concord, California, reporting infectious disease cases and following quarantine or isolation instructions is handled through local public health systems and state law. Healthcare providers, laboratories, and institutions must follow reporting pathways to Contra Costa County Public Health and comply with any isolation or quarantine orders issued by the local health officer. This guide explains who must report, how to report, enforcement and appeals, and practical steps for residents and providers.

Who must report and when

Under California law, certain communicable diseases and conditions are reportable by providers and laboratories to the local health officer. In Concord this function is performed by Contra Costa Health Services (CCHS); the county publishes a list of reportable diseases and reporting instructions for clinicians and labs. Contra Costa Health Services: Reportable Diseases[1]

Report promptly: many conditions require immediate, same-day notification by phone.

How to report a suspected or confirmed case

  • Identify the reportable condition using the county and state lists.
  • Phone the Contra Costa Health Services communicable disease unit for urgent reports; non-urgent reports may use the county online forms when available.
  • Complete the Confidential Morbidity Report or electronic equivalent when required by the county.
  • Follow applicable timelines: some conditions require immediate (same-day) notification, others within a specified number of days per county guidance.

Quarantine, isolation and orders

The local health officer may issue isolation or quarantine orders for individuals or groups to prevent disease spread. Contra Costa Health Services maintains guidance and procedures for isolation and quarantine actions, including how orders are issued and communicated. Contra Costa Health Services: Isolation and Quarantine[2]

Follow any written order from the local health officer immediately and keep records of instructions and communications.

Penalties & Enforcement

Enforcement is carried out by the local health officer and supporting county or city agencies. The county may seek compliance through orders, inspections, and involving law enforcement if necessary. Specific monetary fines for violating reporting duties or isolation/quarantine orders are not specified on the cited county pages; see the official links for case-specific guidance. California Department of Public Health: Reporting[3]

  • Monetary fines: not specified on the cited page.
  • Escalation: first notices, then orders or legal action; specific escalation steps and ranges are not specified on the cited page.
  • Non-monetary sanctions: issuance of isolation or quarantine orders, mandatory treatment or monitoring conditions, injunctions or court enforcement actions.
  • Enforcer: Contra Costa Health Services (local health officer); City of Concord may assist via emergency services or police for compliance and safety.
  • Appeals and review: procedures to request review or clarifications are provided by the issuing health officer or county public health unit; specific time limits for appeals are not specified on the cited pages.
  • Common violations: failure to notify the local health officer, failure to comply with isolation/quarantine orders, and failure to provide required information to public health investigators.

Applications & Forms

The county uses standard reporting forms such as the Confidential Morbidity Report (CMR) or electronic reporting portals for laboratories and clinicians; fee information or submission deadlines are not generally required for reporting forms. See the county reporting page for specific forms and submission instructions. Contra Costa Health Services: Reportable Diseases[1]

Action steps for residents and providers

  • If you are a clinician or lab, confirm the condition is reportable and notify CCHS immediately by phone or electronic system.
  • If instructed to isolate or quarantine, ask for the written order and contact information for who issued it.
  • Keep records of all notifications, test results, and communications with public health.
  • If you disagree with an order, request guidance from the issuing public health unit and follow appeal instructions, if any.
Healthcare providers are the main reporters for many infectious conditions; labs also have independent reporting duties.

FAQ

Who must report a case in Concord?
Healthcare providers and laboratories must report reportable conditions to Contra Costa Health Services according to county and state reporting lists.
How quickly must I report?
Some diseases require immediate, same-day reporting; others have specific timeframes—follow the timelines on the county reportable diseases page.
What happens if someone ignores a quarantine order?
Noncompliance can lead to further public health action including court orders or law enforcement involvement; monetary penalties are not specified on the cited county pages.

How-To

  1. Confirm the condition is reportable using the Contra Costa list.
  2. Call the Contra Costa Health Services communicable disease unit for urgent reports and follow their instructions.
  3. Submit the Confidential Morbidity Report or electronic report with required patient details and labs.
  4. Comply with any isolation or quarantine order immediately and document communications.
  5. If needed, request a review or appeal per the issuing authority's instructions.

Key Takeaways

  • Reportable disease reporting for Concord is administered by Contra Costa Health Services.
  • Isolation and quarantine orders come from the local health officer and must be followed immediately.

Help and Support / Resources


  1. [1] Contra Costa Health Services: Reportable Diseases
  2. [2] Contra Costa Health Services: Isolation and Quarantine
  3. [3] California Department of Public Health: Reportable Diseases