The Centers For Disease Control And Prevention (CDC) recently published a new study regarding protection against COVID-19. This study included topics such as wearing masks, ventilation systems, air filtration, and HEPA air filters in indoor spaces. The risk of COVID-19 transmission in indoor air environments such as conference rooms with HEPA filtration reduced exposure from uninfected participants and speakers by up to 65% using aerosol sources as tracking. A combination of air cleaning, social distancing, and universal masking reduced exposure by up to 90%.