France is facing its worst bird flu crisis in history as a rare rebound in outbreaks of the highly contagious virus reached the country’s largest poultry producing regions with cullings topping more than 12 million birds.

As the world prepares for a potential coronavirus pandemic, the U.S. government has been busy making preparations for the possibility of a flu pandemic. The U.S. Food and Drug Administration approved Seqirus’ Audenz, a vaccine for a potential pandemic associated with the H5N1 flu virus.