Valakian

The Valakians are a non-spacefaring sapient humanoid species which hails from Valakis in the Alpha Quadrant.

History
A plague broke out among the Valakians in the 22nd century, causing twelve million deaths in 2149 alone. In 2150, they made first contact with the spacefaring species (Ferengi and M'klexa).

Humans encountered one of the Valakian ships in 2151 and provided medical assistance to the incapacitated crew. Members of the Valakis crew asked for help for their people, and the humans landed on Valakis to cure the sick population. It turned out that the epidemic was not caused by a virus or bacteria. Instead, the disease was genetic: the proteins linking the chromosomes of Valakians were being destroyed. This had been going on for millennia, but the rate of mutation has accelerated over the past few generations.

Society
The Valakians share a planet with less evolved humanoids called Menk. The Menk live in special reservations, while the Valakians are free to live in cities.