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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. 

 Other Health Advisories:

  • All Facilities Letters - An All Facilities Letter (AFL) is a letter from the Center for Health Care Quality (CHCQ), Licensing and Certification (L&C) Program to health facilities that are licensed or certified by L&C. The information contained in the AFL may include changes in requirements in healthcare, enforcement, new technologies, scope of practice, or general information that affects the health facility.
  • Healthcare-Associated Infections Program - CAHAN health advisories that were issued by the HAI Program. 
  • Centers for Disease Control (CDC) - Health Alert Network (HAN)
  • Measles Exposure at a Large Gathering in Kentucky, F​ebruary 2023 and Global Measles Outbreaks  
    CDC/Health​​​​​ Advisory - March 3, 2023 - ​​The Centers for Disease Control and​​ Prevention (CDC) is issuing this Health Alert Network (H​AN) Health Advisory​ to notify clinicians and public health officials about a confirmed measles case at a large gathering. This Health Advisory also highlights other recent large global measles outbreaks and associated U.S. importations, and the importance of early recognition, diagnosis, and appropriate treatment. CDC recommends that clinicians be on alert for cases of measles that meet the case definition.

  • Increased Chikungunya Virus Activity in Paraguay and Associated Risk to Travelers​

    CDC/Health​​​​​ Advisory - March 2, 2023 - ​​The Centers for Disease Control and​​ Prevention (CDC) is issuing this Health Alert Network (H​AN) Health Advisory to notify clinicians and public health authorities of an increase in the number of cases of chikungunya reported in Paraguay. The Health Advisory provides information on the current status of the chikungunya outbreak in Paraguay and advises on evaluating and testing travelers returning from Paraguay with signs and symptoms consistent with chikungunya virus infection.

  • Increase in Extensively Drug-Resistant Shigellosis in the United States ​
    CDC/Health​​​​​ Advisory - Februa​​​ry 24, 2023 - ​​The Centers for Disease Control and​​ Prevention (CDC) is issuing this Health Alert Network (H​AN) Health Advisory a​bout the increase in extensively drug-resistant (XDR) Shigella​ infections (shige​llosi​s) reported through national surveillance systems. CDC asks healthcare professionals to be vigilant about suspecting and reporting cases of XDR Shigella infection to their local or state health department and educating patients and communities at increased risk about prevention and transmission.

  • Emergence of Candida auris in Healthcare Facilities in Northern California​

    CDPH/Health Advi​​sory - February 8, 2023 - The California Department of Public Health (CDPH) and local public health partners are alerting healthcare providers of the emergence of epidemiologically-linked Candida auris (C. auris) cases associated with acute care hospital (ACH), skilled nursing facility (SNF), and outpatient settings in Sacramento and Stanislaus counties since September 2022.

  • Outbreak of Extensiv​ely Drug-resistant Pseudomonas aeruginosa Associated with Artificial Tears   

    CDC/Health Advisory - February 1, 2023 - ​​The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory a​bout infections with an extensively drug-resistant strain of Verona Integron-mediated Metallo-β-lactamase (VIM) and Guiana-Extended Spectrum-β-Lactamase (GES)-producing carbapenem-resistant Pseudomonas aeruginosa (VIM-GES-CRPA) in 12 states. 

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