Talk:Kharaa Bacterium/@comment-34680126-20180328192833/@comment-34680126-20180328201511

no, if a disease is on it's native planet, that means that it has limited spread. A naturally developed disease wouldn't be able to infect and kill everything, as it would be limited by nature itself, and when I typed that, now I think it wasn't just a natural disease. If the disease was modified for use of war, it could be able to bypass the natural defenses and spread throughout the ecosystem. Maybe the disease was a type of bioweapon, and was modified to destroy it's planet of origin, so the survivors had to flee to another planet to start experimenting.