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Old 10-20-2020, 09:00 PM   #199
Radical Centrist
Join Date: Jan 2001
Location: Cottage of Prussia
Posts: 31,423
A CDC review in May found that mask usage led to no significant reduction in influenza transmission.

Here is the studies review

From the Abstract "Although mechanistic studies support the potential effect of hand hygiene or face masks, evidence from 14 randomized controlled trials of these measures did not support a substantial effect on transmission of laboratory-confirmed influenza."

UT's note, a more recent COVID-specific study found masks very useful.
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