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Asrat Hailu, Juthika N. Menon, Nega Berhe, Lashitew Gedamu, Thomas H. Hassard, Petrus A. Kager, Joseph Olobo, Peter A. Bretscher, Distinct Immunity in Patients with Visceral Leishmaniasis from that in Subclinically Infected and Drug-Cured People: Implications for the Mechanism Underlying Drug Cure, The Journal of Infectious Diseases, Volume 184, Issue 1, 1 July 2001, Pages 112–115, https://doi.org/10.1086/320994
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Abstract
Significant levels of IgG3 and IgG4 and high levels of IgG1 leishmania-specific antibody differentiated the immune states in 10 patients with visceral leishmaniasis from those of virtually all 20 drug-cured and 18 subclinically infected subjects, whereas the level of IgG2 antibody was nondiscriminating. The most extreme “subclinically infected” outlier subsequently developed disease. Overall, the immune states in subclinically infected and drug-cured persons were mutually indistinguishable but were readily distinguished from those of patients. These findings may have implications for the immunologic mechanism underlying drug cure in visceral leishmaniasis