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Human cases of bird flu confirmed in Madera County related to sick dairy cattle

Avian Influenza Identified In California Dairy Cattle, And Transmitted to Human Workers

Deadly Bird Flu Strain Now Detected In California Cattle And Humans

Viral Outbreak Prompts Mandatory Poultry Culling

Authorities in California have verified the existence of a deadly avian influenza virus within the livestock population of Madera County, leading to mandatory culling of poultry and marking the first reported cases of human infection in the United States. The virus, known as H5N1, poses a severe threat to poultry and can also cause respiratory illness in humans.

The outbreak was initially detected in a turkey flock, prompting an immediate investigation by the California Department of Food and Agriculture (CDFA). Subsequent testing confirmed the presence of the highly pathogenic H5N1 virus, a strain known for causing severe disease and high mortality rates in birds.

As a precautionary measure, authorities have initiated a 10-kilometer (6.2-mile) quarantine zone around the affected area, restricting the movement of poultry and poultry products. The CDFA has also ordered the culling of nearly 600,000 turkeys on the infected farm and neighboring farms within the quarantine zone.

While the primary concern lies with poultry, the recent confirmation of human cases associated with the outbreak raises additional alarm. Two workers who had close contact with infected turkeys have tested positive for the H5N1 virus and are currently under medical observation. Both individuals are reported to be experiencing mild symptoms, including fever, cough, and muscle aches.

This development underscores the potential for human infection and the need for heightened vigilance. Health officials emphasize the importance of practicing good hygiene measures, including frequent hand washing and avoiding contact with sick animals or their secretions.

The detection of H5N1 in California is a serious concern, underscoring the need for proactive measures to prevent the spread of the virus. The ongoing containment efforts, including the culling of infected poultry, aim to minimize the risk of further transmission within the livestock population and to safeguard public health.