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Related Experiment Videos

Complement-enhanced neutralizing antibody response to varicella-zoster virus.

C Grose, B J Edmond, P A Brunell

    The Journal of Infectious Diseases
    |April 1, 1979
    PubMed
    Summary

    A new complement-enhanced neutralization test accurately measures humoral immunity to varicella-zoster virus (VZV). This sensitive and specific assay is valuable for assessing VZV immunity in both healthy and immunocompromised individuals.

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    Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology·2003

    Area of Science:

    • Virology
    • Immunology

    Background:

    • Varicella-zoster virus (VZV) infection elicits a humoral immune response.
    • Assessing VZV-specific humoral immunity is crucial for managing infection risk, particularly in vulnerable populations.

    Purpose of the Study:

    • To evaluate a complement-enhanced neutralization test for measuring humoral immunity against VZV.
    • To compare the sensitivity and specificity of this new test with the FAMA assay.

    Main Methods:

    • A complement-enhanced neutralization test was developed and utilized.
    • The test's specificity was examined, and its sensitivity was compared to the FAMA assay.
    • Serum samples from susceptible individuals, including leukemic children, were analyzed.

    Main Results:

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    • The complement-enhanced neutralization test showed neutralizing antibody titers generally two- to fourfold higher than FAMA titers.
    • Absence of neutralizing activity at a 1:4 dilution indicated VZV susceptibility, correlating with low FAMA titers.
    • Subclinical VZV infections were observed in zoster immune globulin recipients, evidenced by seroconversion and persistent neutralizing antibodies.

    Conclusions:

    • The complement-enhanced neutralization test is a sensitive and specific method for determining VZV humoral immune status.
    • This assay is effective for evaluating immunity in both healthy and immunosuppressed individuals.
    • The test aids in identifying individuals susceptible to VZV infection and monitoring immune responses post-treatment.