78 Studies Show: Very Little Evidence that Masking Works

The Cochrane Review poured over 78 mask studies and concluded there was little to no evidence that facemasks provide any efficacy against viral transmission.

First, a note about the Cochrane Review (in their own words):

The Cochrane Library contains high-quality, independent evidence to inform healthcare decision-making. It includes reliable evidence from Cochrane and other systematic reviews, clinical trials, and more. Cochrane reviews bring you the combined results of the world’s best medical research studies, and are recognized as the gold standard in evidence-based health care.

You might remember this table which made the rounds over the past 3 years:

The NEW study added to the lot of analysis and updated their ranges of impacts.

For their core analysis on masks they focused on a dozen studies to determine whether or not masking can quell the spread of infectious respiratory diseases.

We took it upon ourselves to update that infographic into something more visual with quotes from the studies. FEEL FREE TO SPREAD THIS FAR AND WIDE!

New Infographic!

Here are the confidence intervals showing the range of impacts of the studies is a great feature of the report. Their conclusion, these interventions show: “a relative paucity given the importance of the question of masking and its relative effectiveness.”



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