Pandemic: How to Prevent an Outbreak Episode Rating Graph

In this introduction to life on the front lines, doctors in the U.S. and Asia battle the flu, and researchers race to develop a universal vaccine.

Vaccine debates rage while health-care workers inoculate against the Ebola virus in Congo and influenza in detainee camps at the U.S.-Mexico border.

Around the world, community, family and faith help physicians and medical advocates stay strong in the face of long hours and a relentless disease.

Worldwide, scientists test animals and their handlers for emerging viruses. In the U.S. and India, doctors work long hours caring for flu patients.