onehandbh
G.O.A.T.
The problem was that health officials knew that the best empirical evidence from randomized control studies in actual humans (rather than lab models) showed no benefit to masking for respiratory infections, even with n95s, even with trained health professionals. Subsequent studies still haven't shown any benefit, which is why the Cochran review found that quality evidence for masking as public policy doesn't exist. This is when the lab engineer crowd go to war with the randomized control epidemiologists. In lab settings on dummies, the masks seem to work. Apply it to actual humans and you don't get any evidence of it working.
2) The potential risk and reward to the vaccine was also all over the place. Many physicians believe that the reward to the elderly and those with comorbidities such as diabetes and obesity was high, so it was worth any potential risks. With the young, evidence of potential benefit is minimal and basically non-existent for children. Two FDA vaccine safety officials resigned rather than approve boosters and shots for children due to lack of evidence of benefit.
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