Slight reduction in SARS-CoV-2 exposure viral load due to masking results in a significant reduction in transmission with widespread implementation.
from 1.3-1.5 to ~ 1.0 between June and September 2020.
Scientific reports
Goyal A, Reeves DB, Thakkar N, Famulare M, Cardozo-Ojeda EF, Mayer BT, Schiffer JT. (2021). Slight reduction in SARS-CoV-2 exposure viral load due to masking results in a significant reduction in transmission with widespread implementation. Scientific reports, 11(1)
Research ScientistBill & Melinda Gates Foundation Continue Reading Niket Thakkar