When did Horizon Season 17 Episode 12 air?
Horizon Season 17 Episode 12 aired on September 8, 1980.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 17 · Episode 12
Invasion of the Virions
Sep 8, 1980·1h
Investigates various virus infections ranging from smallpox and rabies down to influenza and the common cold. The way they function and the reasons the body builds up resistance to some and not to others.
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How long is Horizon Season 17 Episode 12?
This episode runs for approximately 60 minutes.
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