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Portable air purifiers could help to reduce transmission of Covid-19 | Wellcome / EPSRC Centre for Interventional and Surgical Sciences - UCL – University College London
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Efficacy of Portable Air Cleaners and Masking for Reducing Indoor Exposure to Simulated Exhaled SARS-CoV-2 Aerosols — United States, 2021 | MMWR
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Air Purifiers with Filters that 'Kill' Coronavirus Are in Production | 2020-07-29 | Engineering News-Record
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