About this service
The Communicable Disease Prevention and Control unit of Marin County Public Health receives reports of suspected or confirmed communicable diseases and coordinates public health response to prevent and control spread. The unit provides guidance to health care providers, laboratories, organizations, and community members about reporting requirements, appropriate follow-up, and resources for managing reportable conditions.
Who this service is for
This service is for:
- Health care providers and laboratory personnel required to report certain diseases and conditions under California law (Title 17 Reportable Conditions).
- Community members who suspect a communicable disease incident or cluster.
- Organizations such as schools, childcare facilities, long-term care facilities, and congregate living settings that need public health guidance on communicable disease issues.
- Public health partners seeking coordination or consultation on communicable disease prevention and control in Marin County.
Details
Overview and purpose
The Communicable Disease Prevention and Control unit receives reports of suspected or confirmed reportable diseases and conditions, investigates cases and outbreaks, provides control recommendations, and communicates with affected parties to prevent further transmission. Reporting helps the county identify trends, protect vulnerable populations, and coordinate necessary interventions.
Before you contact the Public Health Office
- Write down the suspected disease, when it happened, and where it was reported.
- Gather name of patient and details of lab tests.
- Include close contacts, if you have them.
Important things to know
- Some urgent public health reports are handled 24/7.
- Non-urgent concerns are handled during business hours.
How to report or get guidance
Review the Communicable Disease Prevention and Control page for the correct reporting process for the issue: Communicable Disease Prevention and Control.
If you are a health care provider and the issue is urgent outside of business hours, follow the after-hours instructions. If you are a community member or provider and the issue is not urgent, use the email or phone option listed for the program.
Contact information
Urgent Reports — 24/7
- During business hours: Mon - Fri, 9 am - 5 pm — Call 415-473-4163
- After hours: Call Health Officer On Duty — Call 415-479-5305 or 415-499-7238
- Some examples of urgent reportable diseases include: Botulism, Measles, Monkeypox or Orthopox Virus, Paralytic Shellfish Poisoning, and Rabies
- Please reference the California Title 17 Reportable Conditions for a complete list of reportable diseases and conditions.
Non-Urgent Reports
- Email: Communicable Disease
- Fax (Communicable Disease, TB, and STDs): 415-473-6002
- Call during business hours: Mon - Fri, 9 am - 5 pm — Call 415-473-4163
- HIV reporting during business hours: Mon - Fri, 9 am - 5 pm — Call 415-473-6722
- Fax the CDPH 8641 form to 415-473-2372
Legal and reference materials
The California Reportable Disease Information Exchange (CalREDIE) is a computer application that the California Department of Public Health (CDPH) has implemented for web-based disease reporting and surveillance. Specified diseases and conditions are mandated by State laws and regulations to be reported by healthcare providers and laboratories to local public health authorities. Enroll via the CalREDIE Account Request Portal
Title 17 Reportable Diseases and Conditions — Use this complete list as a reference for all the Reportable Diseases and Conditions (Updated June 2025).
What happens after you report
Public Health staff may contact you for more details or route your concern to the most appropriate program. The unit will determine whether investigation, testing, contact tracing, or control measures are needed based on the condition reported and the local public health assessment.