Forwarded by the Los Angeles County Department of Public Health
Forwarded by the Los Angeles County Department of Public Health
CDPH Health Advisory:
Detection of Highly Pathogenic Avian Influenza (HPAI) A(H5N1) in California Dairy Cattle
September 4, 2024
The California Department of Public Health (CDPH) released a Health Advisory today regarding the confirmation of highly pathogenic avian influenza in cattle at three California dairies located in the Central Valley. To date, there have not been any confirmed human infections of avian influenza A(H5N1) in California, and the current risk to the public remains low. However, people with job-related or recreational exposures to infected birds, cattle, or other animals are at higher risk of infection.
The CDPH key messages are included below. Please read the full CDPH Health Advisory for details.
Key Messages
  • Avian influenza A(H5N1) has been confirmed in cows at three California dairies located in the Central Valley.
  • Healthcare providers should consider avian influenza A(H5N1) in persons with acute respiratory symptoms and/or conjunctivitis and recent exposure to animals suspected or confirmed to have avian influenza.
  • Providers should immediately report any suspected avian influenza infections to their local health departments.
  • Testing of respiratory and conjunctival specimens for avian influenza is only available at public health laboratories and requires coordination with your local health department.
  • Antiviral treatment is recommended for patients suspected or confirmed to have avian influenza A(H5N1) infection.
  • Healthcare providers should follow standard, contact, and airborne precautions when caring for patients suspected of having avian influenza A(H5N1) infection.
In Los Angeles County, report any suspected human case of avian influenza A(H5N1) virus infection to Public Health immediately.
Los Angeles County DPH Acute Communicable Disease Control:
  • Weekdays 8:30 am–5:00 pm: call 213-240-7941.
  • After-hours: call 213-974-1234 and ask for the physician on call.
Long Beach Health and Human Services:
  • Weekdays 8:00 am-5:00 pm: call 562-570-4302.
  • After hours: call the duty officer at 562-500-5537.
Pasadena Public Health Department:
  • Weekdays 8:00 am-5:00 pm: call 626-744-6089.  
  • After hours: call 626-744-6043.
Read the full CDPH Health Advisory
You can also copy and paste this link into your browser:  https://www.cdph.ca.gov/Programs/OPA/Pages/CAHAN/Detection-of-H5N1-in-California-dairy-cattle.aspx
To view this and other communications or to sign-up to receive LAHANs, please visit ph.lacounty.gov/lahan.
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