Stargate SG-1 (1997–2007)
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The Broca Divide 

The Stargate base is put in deadly peril when it is contaminated with a dangerous infection which causes its victims to become mindlessly animalistic brutes.



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Episode cast overview:
Danny Wattley ...
Roxana Phillip ...


SG-1 visits a nameless planet which fascinates Daniel as a casus of the "Broca divide", the cohabitation of stone - and bronze age people: the Touched, aggressive cavemen, and a Minoian urban civilization, the Untouched, but with a twist: it's one population, a disease can turn anyone of the Untouched, who is then banished for life, to prevent contagion, even the king's daughter. Dr. Jackson's frustration when Jack decides to return, because no goa'uld threat is found, won't be repeated as the President has added scientific research to the prioritary objectives, but in this case they didn't leave fast enough: very soon members of the team get symptoms of reversal to an animal state, infecting others on the base. General Hammond is forced to have the whole mountain quarantined. As both Teal'c and Daniel and found to be immune, they return to get a blood sample from the Untouched, while Dr. Fraiser searches frantically for an explanation and cure... Written by KGF Vissers

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Release Date:

15 August 1997 (USA)  »

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Aspect Ratio:

16 : 9
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Did You Know?


First appearance of Teryl Rothery as Dr. Janet Fraiser, who would go on to become the second most regular character of the series supporting characters, appearing in 75 episodes during the first 9 seasons. See more »


General Hammond is placed in isolation room with O'Neill, but is not there in subsequent shots of the same room. See more »


Colonel Makepeace: Don't you worry, boys. That's why the SG-3 Marines are comin' with. You can count on us to watch your backsides.
Dr. Daniel Jackson: Actually, it's - it's more my frontside I was worried about.
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References I Love Lucy (1951) See more »


End Title
Written by Joel Goldsmith
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User Reviews

Dangerous Infection
21 April 2015 | by (Rio de Janeiro, Brazil) – See all my reviews

Colonel O'Neill, Sam, Daniel and Teal'c go to a planet where people previous to the Stone Age live in the dark side and Bronze Age people live in the sunny side. Soon they learn that the Touched is an aggressive people while the Untouched are peaceful. Out of the blue, the daughter of the Untouched king is in observation since she have just had contact with the Touched. Further, the Goa'ulds have passed by the planet many years ago. O'Neill decides to return to Earth and soon they discover that they are infected by a strange disease and contaminating the others in the base. However Teal'c, Daniel and Dr. Janet Fraiser are immune and General Hammond orders to seal the mountain and leave the base in quarantine. Teal'c and Daniel return to the planet to get blood sample from the Untouched so that Dr. Frasier may research a cure. But when they arrive, Daniel is abducted by the Touchable and Teal'c does not have support from the Untouchable. Will Dr. Frasier find the cure for the infection?

"The Broca Divide" is an excellent episode of "Stargate SG-1" with a great story of outbreak. The plot is consistent and has funny moments, like when Samantha attacks O'Neill in the locker-room. My vote is nine.

Title (Brazil): "The Broca Divide"

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