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
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  Data: 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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  Data: <searchLink fieldCode="AU" term="%22Mazarakis+N%22">Mazarakis N</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Toh+ZQ%22">Toh ZQ</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Neal+E%22">Neal E</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Nguyen+C%22">Nguyen C</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Bright+K%22">Bright K</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Luu+S%22">Luu S</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Quah+L%22">Quah L</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Ng+YY%22">Ng YY</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Hart+J%22">Hart J</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Do+LAH%22">Do LAH</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Rudel+A%22">Rudel A</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Dassanayake+S%22">Dassanayake S</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Higgins+RA%22">Higgins RA</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Carissa+R%22">Carissa R</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Ong+DS%22">Ong DS</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Justice+F%22">Justice F</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Moore+KA%22">Moore KA</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Watts+E%22">Watts E</searchLink>; Infection, Immunity, and Global Health, Murdoch Children's Research Institute, Parkville, Australia.<br /><searchLink fieldCode="AU" term="%22Subbarao+K%22">Subbarao K</searchLink>; The Peter Doherty Institute for Infection and Immunity, Melbourne, Australia.<br /><searchLink fieldCode="AU" term="%22Mulholland+K%22">Mulholland K</searchLink>; 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.<br /><searchLink fieldCode="AU" term="%22von+Mollendorf+C%22">von Mollendorf C</searchLink>; 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.<br /><searchLink fieldCode="AU" term="%22Licciardi+PV%22">Licciardi PV</searchLink>; 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.
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  Data: <searchLink fieldCode="JN" term="%227908424%22">The Journal of infection</searchLink> [J Infect] 2026 Apr; Vol. 92 (4), pp. 106727. <i>Date of Electronic Publication: </i>2026 Mar 13.
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  Data: <i>Publisher: </i><searchLink fieldCode="PB" term="%22W%2EB%2E+Saunders%22">W.B. Saunders </searchLink><i>Country of Publication: </i>England <i>NLM ID: </i>7908424 <i>Publication Model: </i>Print-Electronic <i>Cited Medium: </i>Internet <i>ISSN: </i>1532-2742 (Electronic) <i>Linking ISSN: </i><searchLink fieldCode="IS" term="%2201634453%22">01634453 </searchLink><i>NLM ISO Abbreviation: </i>J Infect <i>Subsets: </i>MEDLINE
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        Value: 10.1016/j.jinf.2026.106727
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        Text: English
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              Text: 2026 Apr
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