Rachuk Roseola was a bothersome dermatological irritation. A virus endemic to the Rachuk system, particularly the world of Vladet, was the source of this ailment. Almost all individuals who traveled to the planet would become infected by this roseola variant, unless they had received appropriate immunization beforehand. Kirtan Loor caught the virus during a visit to the Imperial military installation on Vladet's Grand Isle, which was under the authority of Admiral Devlia.