... The team added 11 new randomized controlled trials and "cluster-RCTs," which randomize groups of subjects rather than individuals, to its prior review from November 2020, for a total of 78 studies. The additions included COVID pandemic trials: two from Mexico and one each from England, Norway, Denmark and Bangladesh, the latter two well known internationally.
The Danish study had trouble finding a major journal willing to publish its controversial findings that wearing surgical masks had no statistically significant effect on infection rates, even among those who claimed to wear them "exactly as instructed."
Mainstream media overlooked red flags in the Bangladeshi mask study, which found no effect for surgical masks under age 50 and a difference of only 20 infections between control and treatment groups among 342,000 adults. ...
