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, health officials said.

The risk to the general public from bird flu is low, and there has been no further evidence of person to person spread, according to the U.S. Centers for Disease Control and Prevention.