Seropositive leprosy individuals have a tendency to experience a change into leprosy lepromatous type.
Previous studies have demonstrated that the activity of indoleamine 2, 3-dioxygenase (IDO) in patients with
lepromatous type leprosy is higher than those with tuberculoid type leprosy. However, no study has been
available showing how IDO level can be correlated to seropositive subjects
