Als And Muscle Weakness - Videos

The benefits of HIV treatments often come with side effects, some of them strong enough to keep people from taking their medications.

A company in Meriden, Connecticut is producing doses of a swine flu vaccines but does not hava a customer yet.

Janet Shamilan reports on some of the people who have come down with swine flu.

Meredith Viera speaks with Dr. Richard Besser, Acting Director of the Centers for Disease Control and Prevention re: swine flu.

The World Health Organization has raised the swine flu pandemic threat level to 4 on a scale of 1 to 6. NBC's Robert Bazell reports.