Volume 36, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



A variety of methods have been employed to detect viral immune complexes (IC) in clinical specimens. However, most techniques used were not antigen-specific. We developed a simple, specific double antibody sandwich technique to detect artificial anti-dengue (DEN) IgM immune complex (IgM-IC). Positive reactivity with IgM-ICs prepared with live DEN-1, -2, and -3 viruses was found to be related to IgM titers exceeding 1:20 and to the titer of the viruses. Most IgM-ICs prepared with live DEN-4 virus did not react. In contrast, IgM-ICs prepared with hemagglutination antigens, representing all 4 serotypes, reacted positively with amounts of antigens ranging from 2 to 8 units. These IgM-ICs were not type-specific.


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