California Health Alert Network (CAHAN)

The California Health Alert Network (CAHAN) is the State of California’s web-based information and communications system for distribution of health alerts, dissemination of treatment and prevention guidelines, coordination of disease investigation efforts, preparedness planning, and other initiatives that strengthen state and local preparedness.

• CAHAN Alerts

This list of health alerts and advisories is not comprehensive, but is here as an archive of previous alerts. 

Monkeypox 2022

• For more information on Monkeypox please visit the Napa County Monkeypox informational page.
• Severe Monkeypox (MPX) Infection in People with Untreated HIV and a Weakened Immune System

Coronavirus (COVID-19) 2020

• 02/28/2020: Interim Clinical Guidance for Managing Patients Who May Have Novel Coronavirus (COVID-19) Infection
• Confidential Morbidity Report (PDF)
• Coronavirus Information

Zika 2018

• 01/24/2018: Updated Guidance and Testing for Zika Infection (PDF)
• 01/10/2018: Updated Guidance for Assessment and Testing for Zika Virus Infection in Pregnant Women and Newborns (PDF)
• 01/2018: Zika Screening Algorithm (PDF)

Influenza 2017

• 10/02/2017: Order for mandatory influenza vaccination or masking of all healthcare workers (PDF)
• 01/03/2017: 2017 Influenza Health Advisory January 3, 2017 (PDF)

Zika 2017

• 07/2017: Zika Testing Request for Providers updated July 2017 (PDF)
• 01/27/2017: Zika Provider Update January 27, 2017 (PDF)

Fentanyl 2016

• 04/11/2016: Health Advisory on Fentanyl Overdoses from Counterfeit Norco (PDF)

Zika 2016

• 08/08/2016: Health Advisory Update on Zika Virus (PDF)
• 07/05/2016: CDPH FAQs for Healthcare Providers (PDF): Zika Virus Testing
• 06/10/2016: Health Advisory Update: Zika Virus (PDF)
• 04/08/2016: California Department of Public Health All Facilities Letter Preventing Transmission of Zika Virus in Labor and Delivery Settings
• 03/29/2016: Health Update on Zika Virus for providers from Napa County Public Health (PDF)
• 03/25/2016: CDC MMWR Vol. 65
  • Update: Interim Guidance for Health Care Providers Caring for Women of Reproductive Age with Possible Zika Virus Exposure (U.S. 2016)
  • Update: Interim Guidance for Prevention of Sexual Transmission of Zika Virus (U.S. 2016)
• 02/24/2016: Health Advisory Update (PDF): Zika Virus
• 02/02/2016: Health Advisory (PDF): Zika Virus
• Zika Lab testing documents
  • Zika lab form (PDF) (03-16-2016)
  • Zika lab form instructions (PDF)
  • Zika line list (PDF)
• Zika lab FAQs for healthcare providers

Zika information for the public:

• Fact Sheet (Bilingual): Zika and Pregnancy (PDF)
• FAQs: English Zika FAQ (PDF) and Spanish Zika FAQ (PDF)
• Mosquito bite prevention:
  • In Napa County: English (PDF) and Spanish (PDF)
  • For international travelers: English (PDF) and Spanish (PDF)

Influenza 2016

• 02/05/2016: CD Health Advisory Influenza 02-05-016 (PDF): Severe Influenza Illnesses Reported