From the Cochrane Library database of science studies:
Wearing masks in the community probably makes little or no difference to the outcome of laboratory confirmed influenza/SARS CoV 2 compared to not wearing masks (RR 1.01, 95% CI 0.72 to 1.42; 6 trials, 13,919 participants; moderate certainty evidence). Harms were rarely measured and poorly reported (very low certainty evidence).
These findings go to the heart of the case for mask mandates, a policy that generated much resentment and acrimony during the pandemic. They also show that the CDC, which has repeatedly exaggerated the evidence in favor of masks, cannot be trusted as a source of public health information.
In September 2020, then‒CDC Director Robert Redfield described masks as “the most important, powerful public health tool we have.” He claimed masks provided more protection against COVID-19 than vaccines would. Reason
We live in strange times. It would be good to be “pro-science” except that, so often now, it means being “pro-nonsense.” And how can that change?
The only answer many Canadians could think of was:
Convoy. Convoy. Convoy.
We wish science could be a source of truthful information again.