AUTHOR=Okokon Enembe , Chibuzor Moriam , Ezema Chisom , Bernard Moses , Barde Veronica , Oyo-Ita Angela , Meremikwu Martin , WHO Colleagues TITLE=The effectiveness of air-cleaning technologies against COVID-19 transmission in healthcare settings JOURNAL=Frontiers in Environmental Health VOLUME=Volume 4 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/environmental-health/articles/10.3389/fenvh.2025.1548272 DOI=10.3389/fenvh.2025.1548272 ISSN=2813-558X