Interesting data table re: COVID/masking showing "Time to Infectious Dose..."
The Table is from the University of Minnesota. 
University of Minnesota's article: https://www.cidrap.umn.edu/news-perspective/2021/10/commentary-what-can-masks-do-part-1-science-behind-covid-19-protection
University of Delaware's Research Office presentation:
https://research.udel.edu/2022/01/10/covid-19-town-halls-2022/
The discussion by Dr. Kelly Frick, Interim head of Student Health Svcs, on COVID, Delaware's numbers, masking on campus, while teaching, etc. begins at the 4:15 mark in the video.
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