Cardooine Chills, named after the planet, was a virus that caused congestion, coughing, fatigue and body aches, as well as an insatiable appetite. The virus had relatively stable structure, and those afflicted by it generally developed an immunity, allowing the virus to strike only once in a lifetime. Moreover, it could be prevented through the use of vaccines. Around the time of the Bacta War, a similar virus haunted the inhabitants of Halanit, except that the virus mutated at such a rate that it was impossible to prevent using vaccines and would strike the same individual more than once.