Ooooh, was haben wir denn hier? Ist das nicht in etwa das, was ich in #27956 schon geschrieben habe?
https://www.cochrane.org/news/statem...viruses-reviewMany commentators have claimed that a recently-updated Cochrane Review shows that 'masks don't work', which is an inaccurate and misleading interpretation.
It would be accurate to say that the review examined whether interventions to promote mask wearing help to slow the spread of respiratory viruses, and that the results were inconclusive. Given the limitations in the primary evidence, the review is not able to address the question of whether mask-wearing itself reduces people's risk of contracting or spreading respiratory viruses.