Colleen Chawla is settling into an important role for San Mateo County: as its chief health officer who manages 2,200 employees and a $1.3 billion budget.

It's spring, the birds are migrating and bird flu (H5N1) is rapidly evolving into the possibility of a human pandemic.

The lack of regular, clear communication from the Trump administration on the bird flu outbreak has made it unnervingly ...

Tom Carroll spoke with his colleague Lila Seidman to learn more about a successful pilot program in L.A. County that involves ...

North Dakota has reported five more measles infections in Williams County, raising the state outbreak total to nine cases.