The BEST episodes written by Rod Roddenberry

#1 - Infection

Earth: Final Conflict - Season 1 - Episode 20

Ne'eg dies from being exposed to a devastating virus that was unleashed from an alien probe. The virus falls into the hands of a group of white supremacists, they release the virus into the Lincoln Hills homeless shelter. The deadly virus quickly spreads, threatening to decimate both the human and Taelon races. Boone, infected with the virus, comes up with an idea to develop anti-bodies against the virus but it may not be in time to prevent the virus spreading over earth.