Philadelphia health commissioner Dr. Farely weighs in on mask effectiveness study

Name: Philadelphia health commissioner Dr. Farely weighs in on mask effectiveness study
Uploaded: 2020-08-14T12:06:00Z
Duration: 6 min 12 s
Description: Dr. Farely gives his take on a study that looked at 14 different types of mask and their effectiveness at preventing the spread of coronavirus.

Dr. Farely gives his take on a study that looked at 14 different types of mask and their effectiveness at preventing the spread of coronavirus.

Posted August 14, 2020 8:06am EDT