Bird Flu Outbreak Expands Across Multiple Regions

New cases in dairy cattle and poultry raise concerns over human transmission and food safety.

H5N1 detected in dairy herds across nine US states, with Michigan reporting the highest number of infections.
San Francisco finds bird flu in wastewater and live bird markets, prompting increased surveillance.
Australia culls thousands of hens as H7N3 strain spreads to a third farm, threatening egg supplies.
Three US dairy farm workers infected, with the latest case showing respiratory symptoms.
Authorities prepare millions of vaccine doses as a precaution against potential human transmission.