Communicable Diseases

Public Health partners with medical care providers in the community, and the California Department of Public Health, to prevent and control the spread of infectious diseases. We investigate and follow-up on reported cases and their contacts. Staff provide education to individuals and in group settings, and surveillance duties to reduce incidents and prevent additional cases.

Hot Topics

For hot topics in Infectious Disease, please see the following links:

• Mpox information 
• COVID-19
• Diseases A to Z
• Flu Information
• Measles Information
• Placer Mosquito and Vector Control District
• Sexually Transmitted Disease Information and Control Branch
• West Nile Virus

Provider Portal

Utilize our online resources to report an outbreak, disease, or animal bite.