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Coronavirus Disease 2019 (COVID-19): Health Promotion/Prevention

COVID-19 is an emerging, rapidly evolving situation. Get the latest public health information from CDC: . Get the latest research from NIH:

Face Covering, the Evidence, and Mask Making

DIY fabric masks

  • Provide a protective barrier to droplet transmission (especially from those who may be asymptomatic but infected, and in areas of significant community transmission)
  • Preserve the supply of N95 respirator masks for healthcare workers
  • Signal a positive social message
  • Current recommendation from the CDC (4/13/20) ("Use of Cloth Face Coverings to Help Slow the Spread of COVID-19") (printer friendly)



Cloth Face Covering Guidance Health Advisory (NY State DOH)   pdf 

Coronavirus: Which Mask Should You Wear? (Types, Protection, How to Make) (NY Times)

Slowing Spread of Coronavirus Infection with Homemade DIY Masks (YouTube video, 6 min 45 sec)  (Lex Fridman, MIT)

Masks4Medicine FB Page (DIY, Where to DONATE)

What's the best material for a mask? ("The best-performing designs were a mask constructed of two layers of high-quality, heavyweight “quilter’s cotton,” a two-layer mask made with thick batik fabric, and a double-layer mask with an inner layer of flannel and outer layer of cotton.")


Selected biomedical evidence: 
van der Sande, M., Teunis, P., & Sabel, R. (2008). Professional and home-made face masks reduce exposure to respiratory infections among the general population. PloS one, 3(7), e2618.

Davies, A., Thompson, K. A., Giri, K., Kafatos, G., Walker, J., & Bennett, A. (2013). Testing the efficacy of homemade masks: would they protect in an influenza pandemic?. Disaster medicine and public health preparedness, 7(4), 413–418.




Clover Mask Tutorial

Prevent, Prepare, Risk Reduction


5 steps every time:

  1. Wet your hands with clean, running water (warm or cold), turn off the tap, and apply soap.
  2. Lather your hands by rubbing them together with the soap. Lather the backs of your hands, between your fingers, and under your nails.
  3. Scrub your hands for at least 20 seconds. Need a timer? Hum the “Happy Birthday” song from beginning to end twice.
  4. Rinse your hands well under clean, running water.
  5. Dry your hands using a clean towel or air dry them.

Why? Read the science behind the recommendations


When and How to Wash Your Hands | Handwashing | CDC. (2019, December 4).