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Office of the Health Officer

The Office of the Health Officer uses a population health approach to protect and advance the health of everyone in San Mateo County.

The Office supports the work and priorities of the County Health Officer. The County Health Officer is appointed by the Board of Supervisors and serves as a key public health representative in the local community responsible for at least 171 distinct duties. The Health Officer constantly monitors conditions and potential health threats throughout the community, promoting the use of local health services, advocating for public health policy initiatives with local and state policy makers, promoting disease prevention and health education, and supporting emergency preparedness efforts.

To support this work, the Office includes Epidemiology and Health Equity, Policy, and Planning teams. Identifying and addressing barriers to reaching desired health outcomes is a foundational goal for the entire Office of the Health Officer.

Epidemiology

Learn more about Epidemiology

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Health Equity, Policy & Planning

Learn more about Health Equity, Policy & Planning

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Health Officer Orders

View the latest orders from the Health Officer

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Respiratory Virus Dashboard

View weekly updates on respiratory virus activity in San Mateo County

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Latest Updates

Respiratory Virus Update: Oct. 16, 2026

Current Respiratory Virus Activity As of Oct. 16, 2026, respiratory virus activity in San Mateo County shows:  

Respiratory Virus Update: Oct. 9, 2026

Respiratory virus season is starting in San Mateo County, with early influenza activity already increasing. COVID-19 activity remains elevated but is decreasing, while RSV activity is currently low. Now is […]

Order No. F26-1: Wearing of Face Masks in Skilled Nursing Facilities

Order No. F26-1 of the Health Officer of the County of San Mateo for the Wearing of Face Masks in Skilled Nursing Facilities Date of Order: October 1, 2026 Effective […]

2026 Suicide Prevention Month

September is Suicide Prevention Month! For 2025, San Mateo County and partners are promoting the statewide theme: “Support, Your Way.” What if suicide prevention could feel human, honest, and self-assured, […]