Company says it received conditional approval for bird flu vaccine from US Department of Agriculture

The US Department of Agriculture last week issued a conditional license for an avian flu vaccine for use in chickens, as an outbreak of a newer variant ravages poultry flocks, contributing to the sky high price of eggs.

​ The US Department of Agriculture last week issued a conditional license for an avian flu vaccine for use in chickens, as an outbreak of a newer variant ravages poultry flocks, contributing to the sky high price of eggs. Read More Breaking News, Latest News and Videos | CNN