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Face Masks with Vents
NHS
Thursday, September 03, 2020

Please be reminded that masks with vents/valves are no longer allowed at school and not recommended by CDC. 

Masks with Exhalation Valves or Vents

The purpose of masks is to keep respiratory droplets from reaching others to aid with source control. Masks with one-way valves or vents allow exhaled air to be expelled out through holes in the material.  This can allow exhaled respiratory droplets to reach others and potentially spread the COVID-19 virus. Therefore, CDC does not recommend using masks if they have an exhalation valve or vent.