Monkeypox virus-infected individuals mount comparable humoral immune responses as Smallpox-vaccinated individuals

Ashley D. Otter*, Scott Jones, Bethany Hicks, Daniel Bailey, Helen Callaby, Catherine Houlihan, Tommy Rampling, Nicola Claire Gordon, Hannah Selman, Panayampalli S. Satheshkumar, Michael Townsend, Ravi Mehta, Marcus Pond, Rachael Jones, Deborah Wright, Clarissa Oeser, Simon Tonge, Ezra Linley, Georgia Hemingway, Tom ColemanSebastian Millward, Aaron Lloyd, Inger Damon, Tim Brooks, Richard Vipond, Cathy Rowe, Bassam Hallis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

In early 2022, a cluster of monkeypox virus (MPXV) infection (mpox) cases were identified within the UK with no prior travel history to MPXV-endemic regions. Subsequently, case numbers exceeding 80,000 were reported worldwide, primarily affecting gay, bisexual, and other men who have sex with men (GBMSM). Public health agencies worldwide have offered the IMVANEX Smallpox vaccination to these individuals at high-risk to provide protection and limit the spread of MPXV. We have developed a comprehensive array of ELISAs to study poxvirus-induced antibodies, utilising 24 MPXV and 3 Vaccinia virus (VACV) recombinant antigens. Panels of serum samples from individuals with differing Smallpox-vaccine doses and those with prior MPXV infection were tested on these assays, where we observed that one dose of Smallpox vaccination induces a low number of antibodies to a limited number of MPXV antigens but increasing with further vaccination doses. MPXV infection induced similar antibody responses to diverse poxvirus antigens observed in Smallpox-vaccinated individuals. We identify MPXV A27 as a serological marker of MPXV-infection, whilst MPXV M1 (VACV L1) is likely IMVANEX-specific. Here, we demonstrate analogous humoral antigen recognition between both MPXV-infected or Smallpox-vaccinated individuals, with binding to diverse yet core set of poxvirus antigens, providing opportunities for future vaccine (e.g., mRNA) and therapeutic (e.g., mAbs) design.

Original languageEnglish
Article number5948
JournalNature Communications
Volume14
Issue number1
DOIs
Publication statusPublished - Dec 2023

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© 2023, Springer Nature Limited.

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