The Biden and Trump administrations have put billions into bird flu monitoring and prevention. But where is that money going?

The outbreak has sickened and killed millions of animals, caused alarm among farmers, and, perhaps most notably to the public, raised the price of eggs.

There's a growing body of evidence that suggests people may have asymptomatic bird flu infections. Shannon Rae Green. More Videos

Public health experts say the government should bolster incentives for farmers and farmworkers to test for and report cases of the virus.

There is another confirmed case of avian flu in Pennsylvania, this time at a live bird market in Philadelphia County.