Health Alerts & Advisories

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.

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

Monkeypox 2022

Coronavirus (COVID-19) 2020

Zika 2018

Influenza 2017

Zika 2017

Fentanyl 2016

Zika 2016

Zika information for the public:

Influenza 2016