A Dual-Antigen Enzyme-Linked Immunosorbent Assay Allows the Assessment of Severe Acute Respiratory Syndrome Coronavirus 2 Antibody Seroprevalence in a Low-Transmission Setting

Sarah M. Hicks, Kai Pohl, Teresa Neeman, Hayley A. Mcnamara, Kate M. Parsons, Jin Shu He, Sidra A. Ali, Samina Nazir, Louise C. Rowntree, Thi H.O. Nguyen, Katherine Kedzierska, Denise L. Doolan, Carola G. Vinuesa, Matthew C. Cook, Nicholas Coatsworth, Paul S. Myles, Florian Kurth, Leif E. Sander, Graham J. Mann, Russell L. GruenAmee J. George, Elizabeth E. Gardiner, Ian A. Cockburn*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    Estimates of seroprevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies have been hampered by inadequate assay sensitivity and specificity. Using an enzyme-linked immunosorbent assay-based approach that combines data about immunoglobulin G responses to both the nucleocapsid and spike receptor binding domain antigens, we show that excellent sensitivity and specificity can be achieved. We used this assay to assess the frequency of virus-specific antibodies in a cohort of elective surgery patients in Australia and estimated seroprevalence in Australia to be 0.28% (95% Confidence Interval, 0-1.15%). These data confirm the low level of transmission of SARS-CoV-2 in Australia before July 2020 and validate the specificity of our assay.

    Original languageEnglish
    Pages (from-to)10-14
    Number of pages5
    JournalJournal of Infectious Diseases
    Volume223
    Issue number1
    DOIs
    Publication statusPublished - 1 Jan 2021

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