Horizon · SEASON 17
Invasion of the Virions
Episode 12 · 1980-09-08

- Documentary
Episode 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.
60 minutes
Season 17 episodes
1. The Ghost Of The Amoco Cadiz1980-01-14
2. You Are Old, Father William1980-01-21
3. Cleared for Take-Off1980-02-04
4. A Sporting Chance1980-02-11
5. The Cancer Detectives of Lin Xian1980-02-18
6. The Big If...1980-02-25
7. Cash from Trash1980-03-03
8. Encounter with Jupiter1980-03-10
9. Portrait of a Poison1980-03-17
10. Magnet Earth1980-03-24
11. Goodbye Gutenberg1980-09-01
12. Invasion of the Virions1980-09-08
13. Beyond the Milky Way1980-09-15
14. Little Boxes1980-09-22
15. The Other Kenya1980-09-29
16. Moving Still1980-10-06
17. The Way Out1980-10-13
18. The Dead Sea Lives1980-10-20
19. Once in a Million Years1980-10-27
20. Smoker's Luck1980-11-03
21. Behind the Horoscope1980-11-10
22. The Mondragon Experiment1980-11-17
23. The Spike1980-11-24
24. The Slatemakers1980-12-01
25. Anatomy of a Volcano1980-12-15