What's better: masks with filters or without?

Name: What's better: masks with filters or without?
Uploaded: 2020-07-17T14:00:00Z
Description: Dr. Alison Haddock, with Baylor College of Medicine, explains the differences between masks with filters and masks without filters.

Dr. Alison Haddock, with Baylor College of Medicine, explains the differences between masks with filters and masks without filters.

Posted July 17, 2020 9:00am CDT