Prime Timeline
   | Year | 
   Event | 
   | 2164 | 
   
      
         ● [1]
         The drug felicium is used to stop a plague on the planet Ornara. The medicine proves to be powerfully addictive, and the whole population of Ornara become addicts. [1]
      
 
      
         ● [2]
         A group of Doctors is sent to Sauria to find a cure for a plague which is raging on the planet. Amongst them is the highly respected physician, Sobon. [2]
      
 
       | 
   
Colour key
● - Shows the canon status and reference of the year for this event
References
| # | 
Series | 
Season | 
Source | 
Comment | 
| 1 | 
TNG | 
1 | 
Symbiosis | 
Two hundred years ago. | 
| 2 | 
 | 
 | 
Star Trek - Rise of the Federation, Book 2 : Tower of Babel | 
 |