Perhaps M. Bernoulli has read the WHO April report which recommended that masks be worn, noticed the sentence At the present time, the widespread use of masks

Perhaps M. Bernoulli has read the WHO April report which recommended that masks be worn, noticed the sentence At the present time, the widespread use of masks by healthy people in the community setting is not yet supported by high quality or direct scientific evidence. and decided not to boss people around without some evidence that it is effective