Immunogenicity and efficacy over 12 months following a fourth dose of a bivalent mRNA or protein-based COVID-19 vaccine: A randomised controlled trial in Australia.

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Title: Immunogenicity and efficacy over 12 months following a fourth dose of a bivalent mRNA or protein-based COVID-19 vaccine: A randomised controlled trial in Australia.
Authors: Mazarakis N; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia., Toh ZQ; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia., Neal E; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia., Nguyen C; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia., Bright K; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Luu S; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Quah L; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Ng YY; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Hart J; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Do LAH; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia., Rudel A; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Dassanayake S; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Higgins RA; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Carissa R; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Ong DS; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Justice F; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Moore KA; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Watts E; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia., Subbarao K; The Peter Doherty Institute for Infection and Immunity, Melbourne, Australia., Mulholland K; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia; London School of Hygiene & Tropical Medicine, United Kingdom., von Mollendorf C; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia. Electronic address: claire.vonmollendorf@mcri.edu.au., Licciardi PV; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia. Electronic address: paul.licciardi@mcri.edu.au.
Source: The Journal of infection [J Infect] 2026 Apr; Vol. 92 (4), pp. 106727. Date of Electronic Publication: 2026 Mar 13.
Publication Type: Journal Article; Randomized Controlled Trial
Journal Info: Publisher: W.B. Saunders Country of Publication: England NLM ID: 7908424 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1532-2742 (Electronic) Linking ISSN: 01634453 NLM ISO Abbreviation: J Infect Subsets: MEDLINE
Database: MEDLINE Ultimate
Description
ISSN:1532-2742
DOI:10.1016/j.jinf.2026.106727