Loss of smell, an unequivocal sign of Covid

Updated:23/01/2021 08:45h


Two international studies confirm that in most patients with respiratory infections that lose their sense of smell it is due to Covid-19. The disease also often causes loss of taste and other senses in the mouth.

The study, published in the scientific journal Chemical Senses, shows that mean loss of sense of smell was 79.7 on a scale of 0 to 100, indicating a large to complete sensory loss. Furthermore, studies show that loss of smell is most likely the best predictor of Covid-19 among patients with symptoms of respiratory diseases.

In addition to the loss of the sense of smell, the sense of taste was also significantly reduced, to 69 on a scale of 0 to 100, as did the remaining sense of sensitivity in the mouth, this time to 37.3 a scale from 0 to 100.

“Although the loss of smell in itself eliminates the ability to perceive the aroma of food, the simultaneous loss of the other senses makes it difficult to register what you eat. So, putting food in your mouth can be a decidedly unpleasant experience »explains one of the study’s leaders, Alexander Wieck Fjaeldstad.

A total of 23 nationalities and more than 4,500 Covid-19 patients from around the world have responded to the researchers’ questionnaire. Previously, researchers had based the correlation between Covid-19 and loss of chemical senses on smaller studies, while these studies collect large amounts of data from countries around the world.

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