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Inexpensive way to test face mask effectiveness in reducing COVID-19 transmission | Duke Health
Duke Health
59K subscribers • 9 videos on Rounds • Health institution
- Published by Duke Health, one of the health institutions Rounds lists. Nobody has recommended it in the communities yet, so it ranks below community picks.
- Presented by Martin Fischer, PhD, as the video describes them
- May be out of date. Findings or guidance it presents have likely moved on.
For anyone, no background needed. Education, not medical advice.
468K views6 years ago
Immunity and infectionEvidence and public healthInfectious diseasePublic health and policy
Martin Fischer, PhD, demonstrates a low-cost laser technique to visualize and compare how well different face masks block respiratory droplets.
Dr. Martin Fischer, Ph.D., from Duke University, developed a simple, low-cost technique to visualize the effectiveness of different face coverings on droplet emissions during normal wear. Testing several face coverings, the researchers found that the particles can be blocked by some, but not all recommended face coverings. N95s without valves, and surgical, and polypropylene masks worked best. Cotton face coverings provided some coverage. Bandanas and neck fleece didn’t block the droplets very much.Why it's here
From a health institutionDuke Health is on Rounds' list of health institutions, and this upload is one of its most-watched lectures or explainers. Nobody has recommended it in the communities yet, so it ranks below community picks.