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Clinical and Diagnostic Laboratory Immunology, May 2005, p. 680-682, Vol. 12, No. 5
1071-412X/05/$08.00+0 doi:10.1128/CDLI.12.5.680-682.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.
Department of Medicine,1 Department of Hematology-Oncology, National University Hospital, Singapore2
Received 6 January 2005/ Returned for modification 15 February 2005/ Accepted 23 February 2005
We report strongyloides hyperinfection in two patients with generalized hypogammaglobulinemia from multiple myeloma and nephrotic syndrome, despite a significant strongyloides-specific immunoglobulin G (IgG) response. In contrast to reports on animals, where human IgG was shown to be a protective antibody, our observation suggests that in humans, immunity to the infective-stage larvae is not protective against the autoinfective larvae, which are the causative agents of strongyloides hyperinfection.
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