Horizon

Season 17 Episode 12: Invasion of the Virions

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.

Genre:

Documentary

Seasons:

62

Episodes:

1174

Cast:

Quality:

HD

Duration:

60 min

First Air:

1964

Rating:

7.5