Overview: In this episode, Horizon reports on the last lab samples of smallpox destined to be destroyed. But do we still have much to learn from this virus?
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First Air Date: Feb 04, 1964Last Air date: Jul 14, 2022Season: 60 SeasonEpisode: 1161 EpisodeRuntime: 60 minutesQuality: HDIMDb: 7.40 / 10 by 27 usersPopularity: 169.75Language: English