AUTHOR= Frontiers Editorial Office TITLE=Expression of concern on: Immunoreactivity of sera from low to moderate malaria-endemic areas against plasmodium vivax rPvs48/45 proteins produced in Escherichia coli and Chinese hamster ovary systems JOURNAL=Frontiers in Immunology VOLUME=14 YEAR=2023 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2023.1292349 DOI=10.3389/fimmu.2023.1292349 ISSN=1664-3224