When sick people search the Web for remedies or tweet about their symptoms, they're sending an early warning signal about disease outbreaks. Now scientists and public health officials are listening in. [2:44]

Dr. Matthew Goers shares how he is using his medical training and passion for public health to combat diseases around the world. Learn about his joint roles as an Epidemic Intelligence Service Officer for the Centers for Disease Control...

Disease detectives track a viral illness outbreak to a reusable shopping bag.