Droplet spread from humans doesn’t always follow airflow

If aerosol transmission of COVID-19 is confirmed to be significant, we will need to reconsider guidelines on social distancing, ventilation systems and shared spaces. Researchers in the U.K. believe a better understanding of droplet behaviors and their different dispersion mechanisms is also needed. In a new article, the group presents a model that demarcates differently sized droplets. This has implications for understanding airborne diseases, because the dispersion tests revealed the absence of intermediate-sized droplets.