Among the refugees was Zeezrom, who lay sick. What we learn of his sickness is that Zeezrom attributed it to spiritual, rather than physical causes. He had a fever, but perhaps saw the feverish burning as a physical manifestation of the burning of fire and brimstone that he felt might be the fate of his soul.
In a state where he felt that his illness had a spiritual cause, he was encouraged to know that Alma and Amulek were in Sidom, for he likely felt that they had the power to heal the spiritual sickness. Zeezrom has them brought to him, and begs them to heal them, clearly believing that they could.