A(H5n1) Bird Flu

The CDC on Wednesday confirmed the first severe case of bird flu in the United States.

A 60-year-old man in Germany became the seventh person to be considered potentially cured of HIV after receiving a stem cell transplant from a person with a genetic mutation that prevents infection.

The CDC said it has confirmed four new cases of highly pathogenic avian influenza in Colorado poultry workers and is aware of a fifth presumptive-positive case.