Virus: Invisible Killers

Smallpox

Documentary

S1, E2: Smallpox caused an estimated 500 million deaths in the 20th century alone. Experts fear the return of smallpox as a biological weapon.

6 May 2018 · 40m

Information

Released
2018
Run Time
40 min
Rated
U
Region of Origin
United States
© 2018 Discovery Communications Inc.

Languages

Original Audio
English
Audio

English (United Kingdom) (AAC)