Human H5 avian influenza case reported in Los Angeles
LA County health officials confirmed a human case of H5 bird flu in an adult who was exposed to livestock infected with H5 bird flu at a worksite. This is the first human case of H5 bird flu detected in LA County. The person had mild symptoms, has been treated with antivirals, and is recovering at home.
There is currently no evidence of person to person spread of this virus. Close contacts of the infected person and other workers exposed at the worksite are being monitored for symptoms and have been offered personal protective equipment, testing and antiviral prophylaxis. No additional cases have been identified at this time.
“People rarely get bird flu, but those who interact with infected livestock or wildlife have a greater risk of infection. This case reminds us to take basic precautions to prevent being exposed,” said Muntu Davis, MD, MPH, Los Angeles County Health Officer. “People should avoid unprotected contact with sick or dead animals including cows, poultry, and wild birds; avoid consuming raw or undercooked animal products, such as raw milk; and protect pets and backyard poultry from exposure to wild animals. It is also important for everyone to get the seasonal flu vaccine, which can help prevent severe seasonal flu illness and lower the risk of getting both seasonal and bird flu infections at the same time if exposed.”
Symptoms of H5 bird flu in humans include eye redness or discharge, fever, cough or difficulty breathing, sore throat, muscle or body aches, diarrhea and vomiting.
People working with infected animals, including cows, poultry, or wildlife, continue to be at higher risk of exposure to H5 bird flu.
To date, the Centers for Disease Control and Prevention (CDC) has reported 65 confirmed human H5 bird flu cases in 2024.