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Why the CDC says you shouldn't use masks with exhalation valves
VERIFY: Do masks with valves work?
Why masks with valves do not slow the spread (1 of 2)
Why CDC Does Not Recommend Wearing Masks with Vents or Valves!
CDC provides more guidance on mask safety | KVUE
VERIFY: Are masks with valves effective?
Do masks with valves work? | Verify
Victorians warned breathing valves masks are insufficient protection
What kind of mask is best, according to the CDC?
VERIFY: Masks with valves defeat the purpose
VERIFY: CDC did not say 85% of people who wear masks catch COVID-19
CDC issues new mask guidelines
