> Essentially no one in modern society is unaware of COVID or the recommendation to wear a mask At the time the study was performed (April and May 2020), it wa

> Essentially no one in modern society is unaware of COVID or the recommendation to wear a mask At the time the study was performed (April and May 2020), it was not common to wear masks in Denmark outside of hospitals. In fact the authorities recommended against wearing masks because there was a shortage and the available masks should be reserved for high risk groups.