USDA Races to Contain Bird Flu Spread in US Dairy Cows

Researchers at Iowa's National Animal Disease Center are developing a cow vaccine and studying virus transmission dynamics.

The H5N1 bird flu virus was unexpectedly detected in the udders and milk of dairy cows in the US.
Scientists at the National Animal Disease Center in Ames, Iowa, are working on a vaccine to prevent further spread.
Initial findings suggest the virus spreads through milk containing high levels of the virus.
Research indicates the virus may have been circulating for months before being reported.
The USDA is investigating whether genetic mutations enabled the virus to infect cows.