In the first comprehensive, peer-reviewed study the efficacy of face masks to prevent the spread of Covid has been called into question.
Within the margin of error there is virtually no difference between a masked group and an unmasked group, Danish scientists discovered: https://humansarefree.com/2020/11/major-new-study-no-evidence-masks-work.html
In the first comprehensive, peer-reviewed study the efficacy of face masks to prevent the spread of Covid has been called into question.
Within the margin of error there is virtually no difference between a masked group and an unmasked group, Danish scientists discovered: https://humansarefree.com/2020/11/major-new-study-no-evidence-masks-work.html