![PROTECT COVID-19 National Core Study | How we know that HEPA filter based air cleaners are likely to be beneficial for reducing transmission of respiratory infections. PROTECT COVID-19 National Core Study | How we know that HEPA filter based air cleaners are likely to be beneficial for reducing transmission of respiratory infections.](https://sites.manchester.ac.uk/covid19-national-project/wp-content/uploads/sites/276/2022/09/air-filtration.jpg)
PROTECT COVID-19 National Core Study | How we know that HEPA filter based air cleaners are likely to be beneficial for reducing transmission of respiratory infections.
![VCK Air Purifiers with H14 True HEPA Filter, Quiet Air Purifier for Home Large Room Bedroom Up To 1596 Sq Ft in 1 Hour, Auto Mode, Remote, Remove 99.99% of Particle, Pet VCK Air Purifiers with H14 True HEPA Filter, Quiet Air Purifier for Home Large Room Bedroom Up To 1596 Sq Ft in 1 Hour, Auto Mode, Remote, Remove 99.99% of Particle, Pet](https://m.media-amazon.com/images/I/71dZYXURZ9L._AC_UF894,1000_QL80_.jpg)
VCK Air Purifiers with H14 True HEPA Filter, Quiet Air Purifier for Home Large Room Bedroom Up To 1596 Sq Ft in 1 Hour, Auto Mode, Remote, Remove 99.99% of Particle, Pet
![Portable air purifiers could help to reduce transmission of Covid-19 | Wellcome / EPSRC Centre for Interventional and Surgical Sciences - UCL – University College London Portable air purifiers could help to reduce transmission of Covid-19 | Wellcome / EPSRC Centre for Interventional and Surgical Sciences - UCL – University College London](https://www.ucl.ac.uk/interventional-surgical-sciences/sites/interventional_surgical_sciences/files/air_filter.jpg)
Portable air purifiers could help to reduce transmission of Covid-19 | Wellcome / EPSRC Centre for Interventional and Surgical Sciences - UCL – University College London
![Efficacy of Portable Air Cleaners and Masking for Reducing Indoor Exposure to Simulated Exhaled SARS-CoV-2 Aerosols — United States, 2021 | MMWR Efficacy of Portable Air Cleaners and Masking for Reducing Indoor Exposure to Simulated Exhaled SARS-CoV-2 Aerosols — United States, 2021 | MMWR](https://www.cdc.gov/mmwr/volumes/70/wr/figures/mm7027e1-F1-large.gif)