Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 21 · Episode 6 ·
The Conquest of Parasites
Horizon presents this report on parasites, their life styles, and the diseases they cause in Third World countries.
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Episode 6 of season 21 of Horizon: “The Conquest of Parasites”. Aired 1984-02-27. Watch it online free on ZapFlix.