Do I need a mask? Is there any evidence for masks? How can I wear one safely?

Dr. Yvette Lu discusses types of masks, evidence around medical and cloth masks, how masks prevent infection, presymptomatic transmission and source control, and how to properly and safely wear a mask. This is a deep dive into (non-scuba) masks and how we can use them for the coronavirus and COVID-19 pandemic.

Thank you to Rob Lyons of Supercreative for filming and editing the video.

References:

COMMENTARY: Masks-for-all for COVID-19 not based on sound data
https://www.cidrap.umn.edu/news-persp...

Respiratory virus shedding in exhaled breath and efficacy of face masks
https://www.nature.com/articles/s4159...

A cluster randomised trial of cloth masks compared with medical masks in healthcare workers
https://bmjopen.bmj.com/content/bmjop...

COVID-19, shortages of masks and the use of cloth masks as a last resort
https://bmjopen.bmj.com/content/5/4/e...

Use of cloth masks in the practice of infection control - evidence and policy gaps
https://www.ijic.info/article/view/11...

Simple Respiratory Protection—Evaluation of the Filtration Performance of Cloth Masks and Common Fabric Materials Against 20–1000 nm Size Particles
https://academic.oup.com/annweh/artic...

Presymptomatic transmission
https://www.cdc.gov/mmwr/volumes/69/w...

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This video is provided for informational purposes only. This video does not create a patient-physician relationship between you and any person in the video, and is not medical advice, diagnosis, treatment, or care, nor intended to be a substitute for any of the foregoing.