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  • Title: Humoral immune responses in the hantavirus cardiopulmonary syndrome.
    Author: Bharadwaj M, Nofchissey R, Goade D, Koster F, Hjelle B.
    Journal: J Infect Dis; 2000 Jul; 182(1):43-8. PubMed ID: 10882580.
    Abstract:
    The immunologic responses that mediate viral clearance of and recovery from hantavirus cardiopulmonary syndrome (HCPS) due to Sin Nombre (SN) virus are unknown. Serial serum samples from 26 patients with acute SN virus infection were tested for IgG, IgA, and IgM reactivity to recombinant viral nucleocapsid (N) and glycoprotein G1 antigens by a novel strip immunoblot assay. The titers of antibodies capable of neutralizing SN virus in vitro also were determined for each sample. At admission, patients with severe disease had lower titers of IgG antibodies to SN virus N antigen (P<.033) and lower neutralizing antibody titers (P<3.4x10-5), compared with patients with mild disease. These data suggest that a strong neutralizing antibody response may be a predictor of effective clearance of and recovery from SN virus infection and raise the possibility that passive immunotherapy may be useful in HCPS.
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