The government is working to head off human bird flu infections. The U.S. government has awarded Moderna $590 million to advance the development of its bird flu vaccine, as the country doubles down on efforts to tackle increasing infections in humans.

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.

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.