Detection of Highly Pathogenic Avian Influenza (HPAI) A (H5N1) Virus in Alameda County

Alameda County Public Health Department (ACPHD) is issuing this Health Advisory to share information and notify clinicians, public health authorities, and the public about influenza A (H5N1), or bird flu. There are ongoing outbreaks of influenza A (H5N1) in dairy cattle and poultry farms in other counties in California. As of December 9, 2024, there are 58 confirmed human cases in the United States, with 32 cases reported in California. The current public health risk for influenza A (H5N1) infection remains low.

1. Information on the influenza A (H5N1) case in an Alameda County resident.
2. Clinicians are asked to consider influenza A (H5N1) in patients with upper respiratory symptoms and exposure to sick/dead birds, wildlife or domesticated animals or exposure to unpasteurized (raw) milk or milk products.
3. If bird flu is suspected, clinicians should call Alameda County Department of Public Health (510) 267-3250.
4. Evaluation and Testing for Human Avian Influenza A (H5N1) Infection

See H5N1 Health Advisory