Officials from the Centers for Disease Control and Prevention recommend that hospitals speed up testing people who are hospitalized with the flu for H5N1 bird flu. Healthcare workers in hospitals

CDC officials say medical professionals are seeing more patients whose illness cannot be traced back to an infected animal or bird.

CDC officials say they extended the guidance now because they are seeing more H5N1 patients whose illness they cannot track back to an infected bird or cow.

The U.S. Centers for Disease Control and Prevention is asking that people with flu severe enough to require hospitalization be tested for bird flu.