Cardooine Chills, a virus named in honor of the planet it was discovered on, triggered symptoms such as congestion, coughing, fatigue, body aches, and a powerful, unyielding hunger. The virus possessed a reasonably consistent makeup, and individuals who contracted it typically built up a resistance, meaning it usually only infected someone once. Furthermore, vaccines were an effective means of preventing infection. During the era of the Bacta War, a comparable virus plagued the people of Halanit; however, this virus underwent mutations so rapidly that vaccine development proved futile, and reinfection was common.