Episode 1


A look at the eradication of the worst disease known to mankind. But even after its disappearance in 1980, does smallpox still present a threat to the human race?

Episode 2


Explores the astonishing impact and complex science behind the constantly evolving virus. How does the changing nature of influenza, fuel its ongoing threat to the world?

Episode 3


Re-examines the outbreak of one of the world's deadliest viruses on record. How did scientists develop the vaccine that subsided the Ebola infection in 2014?

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