Abstract
The neuraminidase-inhibition (NI) assay is a laboratory procedure for the identification of the neuraminidase (NA) glycoprotein subtype in influenza viruses or the NA subtype specificity of antibodies to influenza virus. A serological procedure for subty** the NA glycoprotein is critical for the identification and classification of avian influenza (AI) viruses. The macroprocedure was first described in 1961 by Aminoff and was later modified to a microtiter plate procedure (micro-NI) by Van Deusen et al. (Avian Dis 27:745–750, 1983). The micro-NI procedure reduces the quantity of reagents required, permits the antigenic classification of many isolates simultaneously, and eliminates spectrophotometric interpretation of results. Although, the macro-NI has been shown to be more sensitive than the micro-NI, the micro-NI test is very suitable for testing sera for the presence of NA antibodies and has proven to be a practical and rapid method for virus classification. This chapter provides an overview of the USDA validated micro-NI procedure for the identification of subtype-specific NA in AIV and antibodies.
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Pedersen, J.C. (2014). Neuraminidase-Inhibition Assay for the Identification of Influenza A Virus Neuraminidase Virus Subtype or Neuraminidase Antibody Specificity. In: Spackman, E. (eds) Animal Influenza Virus. Methods in Molecular Biology, vol 1161. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-0758-8_3
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DOI: https://doi.org/10.1007/978-1-4939-0758-8_3
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