June 8, 2021

Portable HEPA Purifiers to Eliminate Airborne SARS-CoV-2: A Systematic Review

Category: Article Summary

Topic: Non-Pharmaceutical Interventions

Keywords (Tags): air purification, non-pharm interventions

• A systematic review of 11 studies found that portable HEPA purifiers were able to significantly reduce airborne SARS-CoV-2-surrogate particles. Experimental parameters varied considerably, including room sizes varying from 14.75 to 108 m3, and surrogate particle size from 0.012um to <1mm. Overall, HEPA filter-based personal air cleaners were overall the most efficient in removing surrogate particles compared to other filters, although one study concluded that efficient but non-HEPA filters can offer similar efficiency.

Liu et al. (June 8, 2021). Portable HEPA Purifiers to Eliminate Airborne SARS-CoV-2: A Systematic Review. Otolaryngology–Head and Neck Surgery. https://doi.org/10.1177/01945998211022636