Christensen Bekka Ozer, Kettner Laura Ozer
Ugeskr Laeger. 2021 Dec 13;183(50).
Through centuries, face masks have been used by health professionals to prevent disease transmission. Currently, there is an increased use of face masks due to the corona pandemic. However, the preventive effect of face masks is still unclear. The aim of this study is to investigate the effect of correct use of face masks, without touching the face, in the prevention of disease transmission in a standardised study population.
We used a standardised study population consisting of Danish cakes "kajkager". One kajkage was wearing a face mask and one kajkage did not wear a face mask, n=2. Kajkager consist of approximately 100% sugar. Since kajkager have no arms, correct use of the face mask was guaranteed. The study population was placed in a hospital setting and observed for six months regarding weight, surface and filling. Changes in these parameters were used as a surrogate measure of disease transmission.
After the six months observation period, both study groups had a similar decline in weight. We observed no significant differences on the surface, but the kajkage wearing a facemask had a slightly fresher filling.
Correct use of face masks has no significant effect on weight, surface or filling in kajkager and therefore no effect on disease transmission in this study population. Thus, in December when the Danish population consumes very large quantities of sugar, health personnel may omit using face masks without an increased risk of disease transmission.
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几个世纪以来，医护人员一直使用口罩来预防疾病传播。目前，由于新冠疫情，口罩的使用有所增加。然而，口罩的预防效果仍不明确。本研究的目的是在一个标准化的研究人群中，调查正确佩戴口罩且不触摸面部对预防疾病传播的效果。
我们使用了一个由丹麦蛋糕“kajkager”组成的标准化研究人群。一个kajkager戴着口罩，另一个kajkager不戴口罩，n = 2。kajkager大约由100%的糖组成。由于kajkager没有手臂，确保了口罩的正确佩戴。将研究人群置于医院环境中，观察六个月的体重、表面和馅料情况。这些参数的变化被用作疾病传播的替代指标。
经过六个月的观察期，两个研究组的体重下降情况相似。我们观察到表面没有显著差异，但戴口罩的kajkager的馅料稍微更新鲜一些。
正确佩戴口罩对kajkager的体重、表面或馅料没有显著影响，因此对本研究人群中的疾病传播没有影响。因此，在12月丹麦人大量食用糖的时候，卫生人员可以省略使用口罩，而不会增加疾病传播的风险。
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