Season 4, Episode 20 Entity

First Aired: February 9, 2001

An alien virus infiltrates the SGC computer and gathers classified data about the crew and the ship. When the virus is presumed killed, it is learned that it has actually sought refuge in Carter's body.

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  • Premiered: June 7, 2002
  • Rating: TV-PG
  • Premise: A military unit uses an ancient archway to travel the universe and battle alien parasites in this cult sci-fi adventure based on the 1994 film `Stargate.' Curmudgeonly Col. Jack O'Neill teams with an archaeologist, an astrophysicist and an alien to combat… (more)

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