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| Title | : | Horizon |
|---|---|---|
| Genre | : | Documentary |
| Overview | : | 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. |
| How to watch? | : | Select a server above. If one doesn't work, try another. The video should load quickly! |
