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Updated 7/21/2026

California is not among the states currently experiencing an increase in cyclosporiasis cases. There are no known local outbreaks in California. The California Department of Public Health continues to closely monitor for domestically acquired cases and outbreaks and encourage preventative measures including following safe food and water practices and thoroughly washing produce.

For more information, read the CDPH New Release about cyclosporiasis cases or visit the CDPH cyclosporiasis webpage.

Additional Resources:

• FDA: Investigation of 5-State Outbreak of Cyclospora Illnesses: Iceberg Lettuce (July 2026)
• CDC: Cyclospora Outbreak Linked to Shredded Iceberg Lettuce Served at Taco Bell in 5 States
• CDC: Food and Drink Considerations When Traveling
• Top 10 Cyclospora Questions

Resources updated 7/23/2026

• California Department of Public Health - West Nile Virus Website
• El Dorado County Environmental Management - West Nile Virus Web Page
• CDC: West Nile Virus

• Measles is a very contagious virus that spreads easily among unvaccinated people.
• 1 in 5 unvaccinated children who contract measles can be hospitalized.
• If you think your family has been exposed to measles or you have measles symptoms, call your healthcare provider and stay home to protect others. Measles begins with a fever and is followed by:
  • A cough
  • Runny nose
  • Pink eyes (conjunctivitis)
  • Rash
• The measles-mumps-rubella (MMR) vaccine provides the best protection against disease and serious illness.

For more information, visit the CDPH Measles Information website or read Answers to Parents' Top Immunization Questions.

Pandemic influenza, or pandemic flu, is a worldwide outbreak of a new flu virus for which there is little or no immunity (protection) in the human population. As the new virus spreads through populations, mutations to the virus could occur and cause illness to become more serious.

The links below provide information to help you and your family be prepared: 

• For Individuals & Families
• For Businesses and Workplaces
• For Community & Faith-Based Organizations
• For Healthcare Providers
• For Local Government
• For Schools