Prof Carl Heneghan, professor of evidence-based medicine at the University of Oxford, told The Telegraph it is “a significant failing” that there have not been high-quality trials done on the effectiveness of masks.
“I do not understand why there's been a lack of will to do high-quality trials in this area,” he said. “We have completely
failed to address this issue and I actually consider that to be an issue that the [Covid] inquiry needs to look at.
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He added that the scientific field’s inability to conduct good clinical trials that gather robust data leaves us exposed and at risk of making the same mistakes in the next pandemic as we did in the last one.