Ancient contagion

The Plague was an illness that spread throughout the Milky Way between 5 and 10 millioln years ago. To escape the plague some of the Ancients tried to ascend, others tried to travel back in time to stop it from spreading but failed, while others who didn't have the plauge left the Milky Way for Pegasus in a huge space-borne city that they called Atlantis, other City-ships could have been used as well.. The Ancient Ayiana had the plague, but it is unknown if this is the reason she was left behind on Earth.,

This Plague shows similarities to the Ori plague