Good ventilation (circulation of clean air) is an important part of preventing COVID-19 spread.
Ventilation can be increased by opening doors and windows or proper use of a heating, ventilation, and cooling (HVAC) system.
In certain situations where good ventilation isn’t possible, a portable air filter or purifier may also help to reduce COVID-19 spread.
World Health Organization, Ventilation and airborne diseases. [Accessed 22 April, 2020].
Atkinson J, Chartier Y, Pessoa-Silva CL, et al., editors. Natural Ventilation for Infection Control in Health-Care Settings. Geneva: World Health Organization; 2009. Annex C, Respiratory droplets. Available from: https://www.ncbi.nlm.nih.gov/books/NBK143281/
Environmental Protection Agency, Will an air cleaner or air purifier help protect me and my family from COVID-19 in my home?. [Accessed 28 May, 2020].