Yes, the Centers for Disease Control and Prevention (CDC) recommends the use of HEPA (high-efficiency particulate air) filters in air purifiers as a way to reduce exposure to indoor air pollution, including respiratory viruses like the flu and COVID-19.
HEPA filters are designed to capture at least 99.97% of particles that are 0.3 microns in size, which includes many viruses and other respiratory irritants. Using a HEPA air purifier can help improve indoor air quality and reduce the risk of respiratory issues, especially for people with allergies or asthma.