7 user 3 critic
The crew and civilian population of Deep Space Nine begin to speak gibberish when a plague - an 'aphasia virus' - engineered by the Bajorans as a weapon against the Cardassians, accidentally gets released into the station's atmosphere.


Paul Lynch


Gene Roddenberry (based upon "Star Trek" created by), Rick Berman (created by) | 5 more credits »

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Episode cast overview, first billed only:
Avery Brooks ... Commander Sisko
Rene Auberjonois ... Odo
Alexander Siddig ... Doctor Bashir (as Siddig El Fadil)
Terry Farrell ... Lieutenant Dax
Cirroc Lofton ... Jake Sisko
Colm Meaney ... Chief O'Brien
Armin Shimerman ... Quark
Nana Visitor ... Major Kira
Jack Kehler ... Jaheel
Matthew Faison Matthew Faison ... Surmak Ren
Ann Gillespie ... Nurse Jabara
Geraldine Farrell Geraldine Farrell ... Galis Blin
Bo Zenga ... Asoth
Kathleen Wirt Kathleen Wirt ... Aphasia Victim
Lee Brooks Lee Brooks ... Aphasia Victim


Cardassian technology isn't as good as it seems. Chief O'Brien is very very busy as systems all over the station are failing. While Trying to free people stuck in an airlock and promising a ship's captain a repair crew by the end of the day, Dax wants him to repair a malfunction in the lab. Then he must repair the navigational computer for Kira, only to be ordered by Sisko to make sure he gets good coffee by fixing the replicators. A while later all of the sudden O'Brien has become aphasic. Bashir has no clue what happened, there seems to be nothing wrong physically with him. Then out of the blue Dax also turns aphasic, right in front of his eyes. All over the ship people are displaying the symptoms, it seems an epidemic caused by a virus. Written by Arnoud Tiele (imdb@tiele.nl)

Plot Summary | Add Synopsis


TV-PG | See all certifications »


Official Sites:

Official Site





Release Date:

24 January 1993 (USA) See more »

Company Credits

Production Co:

Paramount Television See more »
Show more on IMDbPro »

Technical Specs


Sound Mix:




Aspect Ratio:

1.33 : 1
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Did You Know?


Galis Blin appears with Bajoran make-up similar to Ro Laren, with the ridge going across the bottom of the forehead. Other characters such as Kai Opaka and Sito Jaxa who appeared with this extra ridge have had it removed in later appearances. See more »


[last lines]
Commander Sisko: [after burning his lips on a too hot coffee yet again] O'Brien!
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Star Trek: Deep Space Nine - Main Title
Written by Dennis McCarthy
Performed by Dennis McCarthy
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User Reviews

Ok despite some misssed opportunities
2 April 2019 | by brianjohnson-20043See all my reviews

This episode seems like it could have been better with an extra few minutes to tell it's story. Which is interesting. More often it feels the episodes could lose about 10 minutes.

What I wish the episode included was a scene showing the Bajoran doctor discover the cure from Bashir's initial work. This is kind of the climatic moment the story was leading up to. And they just kind of skip it and just tell us via Sisko's log that it happens. I call that a downer.

The other scene I would have liked to see would have been a scene addressing whether the Major's action of capturing and infecting the bajoran doctor against his will was or wasn't acceptable or ethical.

But overall the contagious babeling storyline was good. And It has some interesting twists in determining the provenance of the contagion.

Overall it seems do deserve a 7. But it seems a few easy changes I recommended could have make it a 9 without much difficulty.

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