Does the plague event chain exist?

[Me_]

Ages ago, I read about some unique buildings rlated to a plague in a colony. I've never seen the event happen, but according to the wiki it is something that is guaranteed to fire every game:
http://www.stellariswiki.com/Events#Infectious

Has anyone ever seen this event. Clearly, it is not guaranteed to happen, as it never did for me, so what happened? Has it been removed? Is it really very rare?

 

[General Retreat]

I've seen it once in like... 400+ hours of gameplay. Needless to say, doesn't fire often.

 

[theweepingman]

I've seen it every couple playthrough. Not always, but that probably just because I don't play long enough before restarting the game.

 

[Ezumiyr]

I've seen it once in 500 hours (and it was not recently). I even thought it was part of an event mod I used, and certainly not guaranteed every game.

 

[laptor]

Never seen and I did not know it exists.
But I can see great potential in it!

 

[henzington]

I only recall getting it once. I have actually seen the horizon signal more often.

 

[Deantwo]

I had the event happen the other day. Felt a little short and simple.
Just had to move a new diseased pop to the medical building thingy each time the current pop was cured. Think I lost one pop to the event when it started, and that was all.

 

[Notho]

I got it in one of my first games. I haven't seen it for a long time.

 

[BrokenSky]

Oh yeah I've seen this once. The hospital got built on a tile I didn't want it on though...

 

[Neocv]

I got it a few times, usually in playthroughs when I played as a Peaceful Bureaucracy since with this government you get many core systems therefore improving the chances of firing any colony event.

 

[Janx14]

I just discovered there's space nomads...

 

[ramius3443]

I wasn't aware of it's existance, though tbf I haven't touched this game since 1.3