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Development and Qualification of a Pseudotyped Virus‐Based Microneutralisation Assay for Influenza D Virus
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Development and Qualification of a Pseudotyped Virus‐Based Microneutralisation Assay for Influenza D Virus
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Development and Qualification of a Pseudotyped Virus‐Based Microneutralisation Assay for Influenza D Virus
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Journal Article
Development and Qualification of a Pseudotyped Virus‐Based Microneutralisation Assay for Influenza D Virus
2026
Overview
Background Epidemiological surveillance of influenza D virus (IDV) has gained increased priority following recent serological findings indicating its potential zoonosis in humans. In this context, it is crucial to develop strong, reproducible, reliable and scalable immunological assays that can be quickly implemented in the surveillance of new emerging threats. Serology is a powerful tool for immune monitoring prior to infection and conducting epidemiological surveillance. However, the traditional microneutralisation (MN) assay requires wild‐type viruses, considerably limiting its accessibility for some laboratories. Pseudotyped viruses (PVs) allow for expanded usage since they are safer and more flexible for adaptation to specific strains and enable application in laboratories without implementation in high biosecurity containment. Methods In this study, we conducted the qualification of a PV‐based MN (pMN) assay with IDV‐PVs that express the HEF glycoprotein of the D/Swine/Italy/199724‐3/2015 strain. The assay functionality was examined using 14 bovine serum samples, assessing key analytical parameters including accuracy, specificity, precision, linearity and robustness. Results The findings demonstrate the IDV pMN assay to be an effective method for the detection of neutralising antibodies. Conclusions Therefore, the assay can be a valuable tool to facilitate large‐scale surveillance and provide data to inform immunisation strategy development.
Publisher
John Wiley & Sons, Inc,Wiley
Subject
/ Animals
/ Antibodies, Neutralizing - blood
/ Antigens
/ Assaying
/ Cattle
/ Deltainfluenzavirus - genetics
/ Deltainfluenzavirus - immunology
/ Deltainfluenzavirus - isolation & purification
/ Genomes
/ Humans
/ immunity
/ Neutralization Tests - methods
/ Original
/ Orthomyxoviridae Infections - diagnosis
/ Orthomyxoviridae Infections - veterinary
/ Orthomyxoviridae Infections - virology
/ Proteins
/ Serology
/ Swine
/ Viruses
/ Zoonoses
