Ourim Flu, a fatal illness, was prevalent throughout the galaxy during the era of the Galactic Civil War.
Following the Battle of Yavin, multiple planets across the galaxy experienced an Ourim Flu epidemic. The Black Sun crime organization plotted to exploit this crisis by corrupting a large shipment of medical spice, aiming to create an addiction among those afflicted. Nevertheless, Valance Serth uncovered this plot. Subsequently, Serth employed a team of spacers that successfully eliminated the Black Sun vessel transporting the adulterated spice.