Many respiratory viruses circulate year-round in the United States. Data help track the spread of respiratory viruses in California. Know when the risk is higher by viewing the Weekly Respiratory Virus Report.
These data also help inform the efforts to slow their spread.
Free COVID-19 Tests
Stay Updated on COVID-19 Vaccines
When & Why to Wear a Mask
California’s Vaccine Appointment Site
Indoor Air Quality & Ventilation
Latest CDPH News Releases
Winter viruses are circulating at high levels in California and many of our hospitals are reaching capacity. By doing our part to stay healthy this winter, we can help ensure a healthy California for all.
Employers & Workplaces: Staying Safe on the Job
Health Care, Testing & Treatment Guidance
Education: Office of School Health
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Use our selection of shareable social media messages to keep your community informed about COVID-19 health and safety.