Invisible Killers

The history of three of the most deadly viruses is explored. The three-part series looks at influenza, smallpox and ebola, chronicling their impact on history and society and updating the efforts of scientists to combat the diseases.

Episodes

S1 | E1

Influenza

The history and impact of influenza is explored, from its ability to constantly evolve to the constant threat it poses and the complex science behind it.
S1 | E2

Smallpox

Recalling the ravages of smallpox through the ages and its ultimate eradication at the dawn of the 1980s, after which fears grew of the disease being turned into a bioterror weapon.
S1 | E3

Ebola

An examination of Ebola, which has become one of the world's deadliest viruses, looks back at the devastating 2014 West African outbreak.