Philips is teaming up with experts in the field to study the impact of air purification on indoor virus aerosol levels. The WHO calls for further studies on airborne transmission ; meanwhile, engineering, environmental and air/ventilation experts point to existing evidence that COVID-19 is also airborne and that there is a need for increased ventilation and particle filtration used in conjunction with other measures like social distancing to reduce the risk of airborne transmission .
Indeed, there's still a need for further, global, clinical research to determine how aerosols impact coronavirus transmission. In parallel, Philips plans to verify its devices' efficacy specifically at filtering SARS-CoV-2 from the air.
With a team of more than 100 scientists, doctors and engineers working in air purification, Philips has a long-standing heritage in health tech and has become a global leader in air purification. The company’s newest line of home air purifiers features a smart air quality sensor that continuously scans the indoor air 1000 times per second to detect fine-dust levels and removes ultrafine particles, dust, pollen, gases, bacteria and viruses. The digital display shows real-time indoor air quality levels, and the built-in connectivity allows the user to control and monitor the device with the Philips Clean Home+ App. The 360-degree air circulation system can purify the air in a 20m2 room in less than six minutes .
While Philips air purifiers have not been verified to remove SARS-CoV-2 aerosols from the air – Philips' HEPA filters can remove 99.97% of particles as small as 0.003μm  (equal to 3 nm), smaller than the smallest known virus , from the air that passes through the filter. A similar performance is expected for SARS-CoV-2 aerosols. An independent institute tested that Philips’ air purifiers can reduce the levels of Influenza A (H1N1) virus aerosols by 99.9% in a test chamber, within ten minutes after being turned on .