Study on the immunogenicity of monkeypox virus messenger ribonucleic acid-based vaccine candidates By admin | November 28, 2022 0 Comment In a new study, researchers developed two monkeypox (MPX) virus (MPXV) quadrivalent messenger ribonucleic acid (mRNA) vaccines, mRNA-A-lipid nanoparticle (LNP) and mRNA-B-LNP.