Federal health officials on Thursday called for more testing of employees on farms with bird flu after a new study showed that some dairy workers had signs of infection, even

Bird flu (H5N1) has been spreading across the country, among both animals and people, since April of this year. As the Centers for Disease Control and

The presentation, so brief as to be little more than a public service announcement, signals an abandonment of efforts to prevent the emergence of a wider avian flu pandemic.