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Are Masks Effective Against COVID?
The study is only designed to figure out if masks protect individuals. It doesn't tell you even in principle if masks prevent infected individuals from transmitting the virus to others. The Danish study that was often used in the media to suggest that mask interventions did not work when those researchers reached out to the participants, they found that fewer than half of the masking group said they, quote, wore the mask as recommended,. There was a study in Uganda 2022 that when researchers called the participants by phone, 97% said they always or sometimes wore a mask.