Masks, Distancing, and Public Health

Masks, Distancing, and Public Health

This session will cover public health mitigation measures, what they are, and how they work. A special discussion will highlight the research behind the Notre Dame masks and the science behind how masks work and which masks work best. Also, the COVID-19 situation in St. Joseph County and the relationship between the St. Joseph County Department of Health and the University of Notre Dame will be highlighted. The views presented are the views of the hosts and guests, not the views or policies of the University of Notre Dame. Information provided is not intended to serve as, nor should be interpreted as, specific medical advice or a substitute for the advice of an individual’s personal health practitioner.

Preview for Week 3

Presented by Heidi Beidinger-Burnett

Heidi Beidinger-Burnett gives a preview of this week’s session.  

Unmasked: Lab study shows which face coverings are effective

Presented by Mark McCready

David Leighton and Mark McCready, professors of chemical and biomolecular engineering, conducted a test with several types of masks and face coverings to determine which would block the emission of droplets most effectively. 

Read the full story about different face coverings here.

In this video, Mark McCready talks about the emissions of droplets in different settings.

The Science of Droplet Transmission

Presented by Mary Ann McDowell

This video tutorial demonstrates the difference between droplet and aerosol transmission and the relevance for public health mitigation measures.

Tracking COVID-19 Data

Presented by Heidi Beidinger-Burnett

This presentation will analyze the COVID-19 data in St. Joseph County, IN, while describing the public health implications.  

View the Event

Presented by Heidi Beidinger-Burnett and Mary Ann McDowell

View the conversation from Monday, October 19, at 6 p.m. ET.  Register to receive information about how to join future live events.

The faculty hosts compiled answers to any outstanding questions submitted during the live session. You can read the Questions & Answers here.

Guest speakers include Dr. Mark Fox, St. Joseph County Department of Health Deputy Health Officer; David Leighton, Professor, Department of Chemical and Biomolecular Engineering; and Mark McCready, Professor, Department of Chemical and Biomolecular Engineering and Senior Associate Dean for Research and Graduate Studies.

Dr. Mark Fox, is a physician, ethicist, and public health professional. He currently is the St. Joseph County Department of Health Deputy Health Officer. He obtained a Ph.D. in Religion, Ethics, and Society, focusing on ethical and policy issues in organ donation and transplantation. His work as a clinician is in the area of Medicine/Pediatrics and Preventive Cardiology. He also has a Master’s in Public Health.  

Professor David Leighton received his B.S. from Princeton University in 1980 and his Ph.D. in 1985 from Stanford University. A Professor in the Department of Chemical and Biomolecular Engineering at Notre Dame, he has taught courses in transport phenomena for over 30 years. He is principally known for his research into the behavior of concentrated suspensions, important in areas as diverse as blood flow and oil and gas recovery via fracking. Most recently, in collaboration with Mark McCready, he conducted a test with several types of masks measuring the droplet emissions using particle image velocimetry and laser sheet imaging to determine which face coverings would block the emission of droplets most effectively.

Professor Mark McCready’s current research interests include multiphase fluid mechanics applied to processes that capture and sequester carbon dioxide and use of multi-scale computational models to describe biological and physiological systems. In collaboration with Dr. David Leighton, Dr. McCready investigated the droplet emissions emitted by people wearing different types of face coverings to inform the University of Notre Dame which types of masks blocked the emission most effectively. Dr. McCready received his Bachelor of Chemical Engineering from the University of Delaware and his Ph.D. from the University of Illinois.

Additional Resources

Presented by Heidi Beidinger-Burnett and Mary Ann McDowell

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