|"The Gang Gets Quarantined"|
|Season Nine, Episode Seven|
|Air Date||October 16, 2013|
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"The Gang Gets Quarantined" is the seventh episode of the ninth season of It's Always Sunny in Philadelphia.
When a severe flu outbreak sweeps Philadelphia the gang voluntarily quarantine themselves inside of Paddy's in an attempt to keep their singing voices pristine for an upcoming competition, although they have trouble adhering to the strict rules they've set for themselves.
- Jim O'Heir as Doctor
- Frank parodies Marlon Brando's character from Apocalypse Now, Colonel Walter E. Kurtz, in this episode.
- The Gang sings an a cappella version of the song "MotownPhilly" By Boyz II Men. This is the 4th time that the gang sings together as an a cappella group (previously in The Gang Goes Jihad, Paddy's Pub: The Worst Bar in Philadelphia and The Gang Recycles Their Trash).
|Season 9 Episodes|
| 1. "The Gang Broke Dee"|
2. "Gun Fever Too: Still Hot"
3. "The Gang Tries Desperately to Win an Award"
4. "Mac and Dennis Buy a Timeshare"
5. "Mac Day"
6. "The Gang Saves the Day"
7. "The Gang Gets Quarantined"