The US Department of Health and Human Services is terminating a contract with drugmaker Moderna to develop a vaccine to protect against bird flu amid the agency’s broader efforts to reevaluate therapies that use mRNA technology.

HHS has notified Moderna that it is canceling a nearly $600 million contract for vaccines for flu strains that could trigger future pandemics.

The Trump administration canceled a nearly $600 million award to Moderna to develop an mRNA vaccine for bird flu in humans, the company announced Wednesday. Why it matters: It ends one of the remaining Biden-era efforts aimed at creating vaccines for pandemic preparedness.