3 ms·
Researchers created a test to determine which masks are the least effective
- jaclaz 6y agoActual study here: https://advances.sciencemag.org/content/early/2020/08/07/sciadv.abd3083 https://advances.sciencemag.org/content/early/2020/08/07/sci... Essentially the results are all in this image: https://advances.sciencemag.org/content/advances/early/2020/08/07/sciadv.abd3083/F3.large.jpg?width=800&height=600&carousel=1 https://advances.sciencemag.org/content/advances/early/2020/...