Masks again, again and again.
The Story of mask evidence, barriers, distancing, hygiene, etc.
Physical interventions to interrupt or reduce the spread of respiratory viruses or (A122 for short) is a Cochrane review of the evidence for the effectiveness and harms of all non-pharmaceutical interventions (NPIs) to halt or delay the spread of respiratory viruses. NPIs are also known as physical interventions, excluding drugs, vaccines and other biol…
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