How face coverings can help prevent the spread of COVID-19

June 24, 2020

How face coverings can help prevent the spread of COVID-19

On Tuesday, Governor Jay Inslee announced an order for everyone to wear a face covering when out in public to help prevent the spread of coronavirus. Dr. Chloe Bryson-Cahn, associate medical director of infection prevention at Harborview Medical Center, says that as we continue to learn more about COVID-19, one of the things we've discovered is that in the days leading up to developing symptoms, people can shed quite a bit of virus. Putting a mask on protects others around you.

"When we put on a mask to contain that virus, we call that 'source control' and it’s a really important feature of preventing infectious diseases from spreading," Bryson-Cahn says.

Getty Images

Terms of appropriate usage of file downloads

  • News reporters and news organizations may freely republish and distribute videos, still images and audio files produced by UW Medicine and the University of Washington Health Sciences schools (Dentistry, Medicine, Nursing, Pharmacy, Public Health, Social Work).
  • Works must be attributed/credited appropriately (for example, “UW Medicine” or “University of Washington School of Pharmacy” – as denoted in the file) and must not be used for commercial purposes.
  • These visual and audio files may not be used to exploit or misrepresent UW Medicine or the University of Washington.
  • UW Medicine often licenses still images from Thinkstock but cannot grant republishing rights. You may not republish single image files credited to Thinkstock.
  • Logos of UW Medicine and University of Washington Health Sciences schools may not be republished without explicit permission. Contact us by phone or email: 206.543.3620 or