I’ve never before gone straight back with a redux treatment of a blog post. More typically, it takes more than a year before revisiting a given topic, sometimes several years. This time, supplemental information came immediately, though I’ve delayed writing about it. To wit, a Danish study published November 18, 2020, in the Annals of Internal Medicine indicates our face mask precautions against the Coronavirus may be ineffective:
Our results suggest that the recommendation to wear a surgical mask when outside the home among others did not reduce, at conventional levels of statistical significance, the incidence of SARS-CoV-2 infection in mask wearers in a setting where social distancing and other public health measures were in effect, mask recommendations were not among those measures, and community use of masks was uncommon. Yet, the findings were inconclusive and cannot definitively exclude a 46% reduction to a 23% increase in infection of mask wearers in such a setting. It is important to emphasize that this trial did not address the effects of masks as source control or as protection in settings where social distancing and other public health measures are not in effect.
The important phrase there is “did not reduce, at conventional levels of statistical significance,” which is followed by the caveat that the study was partial and so is inconclusive. To say something is statistically insignificant means that results do not exceed the calculated margin of error or randomness. A fair bit of commentary follows the published study, which I have not reviewed.
We’re largely resorting to conventional wisdom with respect to mask wearing. Most businesses and public venues (if open at all) have adopted the mask mandate out of conformity and despite wildly conflicting reports of their utility. Compared to locking down all nonessential social and economic activity, however, I remain resigned to their adoption even though I’m suspicious (as any cynic or skeptic should be) that they don’t work — at least not after the virus is running loose. There is, however, another component worth considering, namely, the need to been seen doing something, not nothing, to address the pandemic. Some rather bluntly call that virtue signalling, such as the pathologist at this link.
In the week since publication of the Danish study and the pathologist’s opinion (note the entirely misleading title), there has been a deluge of additional information, editorials, and protests (no more links, sorry) calling into question recommendations from health organizations and responses by politicians. Principled and unprincipled dissent was already underway since May 2020, which is growing with each month hardship persists. Of particular note is the Supreme Court’s 5-4 decision against New York Gov. Andrew Cuomo’s mandate that religious services be restricted to no more than 10 people in red zones and no more than 25 in orange zones. Score one for the Bill of Rights being upheld even in a time of crisis.