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Female health worker in mask does a fit test with a man who wears hood and N95 mask

Person looking at computer screen
AB 685 - Reporting Outbreaks to CDPH

Assembly Bill 685 requires CDPH to publicly report information on workplace outbreaks by industry. OHB’s data and investigations team leads this reporting effort. View our summary for additional information.

COVID-19 K-12 School Safety

Our team provides technical assistance to schools and school districts regarding COVID-19 K-12 school safety. See Safe Schools for All and CDPH guidance for more information.

Workers checking the HVAC system in an office
Ventilation Guidance

How can you improve indoor air quality to reduce COVID-19 spread? Our 2-page tip sheet has the answers.  And, for more detailed information, check out our Interim guidance for Ventilation, Filtration, and Air Quality in Indoor Environments

Vaccine Records

What should business owners consider when verifying vaccine status of employees? Find the answer and details about vaccine records in CDPH's Vaccine Record Guidelines & Standards.

N95 respiratory protection
Webinar - Respiratory Protection in Long-term Care (PDF)

Describes the elements and resources needed to implement a respiratory protection program in long-term care facilities.​ View webinar | Request PowerPoint presentation (email)

Chef wearing a mask
Masking Resource

Get the most out of masking. New CDPH guidance explains types of masks and how to get the most protection from them.

grocery store checkout counter: cashier wearing a facemask, behind a plexiglass barrier; customers standing 6 feet apart
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