The US Department of Health and Human Services will award $590 million to Moderna to continue developing a vaccine to protect against bird flu, the pharmaceutical company announced Friday.

The public health risk remains low, but bird flu variants have proven to be unpredictable, which is why the virus is a top priority for the federal government.

Moderna has been awarded approximately $590 million from the federal government to help speed up the development of an mRNA-based bird flu vaccine, alongside other influenza vaccines, health officials announced Friday.