Corona odor loss can last for months – Berliner Morgenpost

In around 80 percent of Covid 19 patients are Sense of smell and taste impaired. Some of them lose it entirely as a result of infection. This is the result of a study by researchers led by Daniel Larremore from the University of Colorado Boulder, which was published last December.

In fact, if you have a Corona infection Destroying olfactory cells in the nasal mucosa. After the infection has been overcome, the affected cells usually regenerate again, but some patients also report permanent impairment of their sense of smell. Basically, the sense of smell is impaired more frequently in patients with a mild course.

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Corona: Affected people sometimes suffer from a disturbed sense of smell for months

At least that is the result of a recent study by scientists led by the physician Jerome Lechien from the University of Paris-Saclay, which was published in the journal “Journal of Internal Medicine”. There the researchers report, among other things, that although most of the sick are already on average three weeks can smell again, some are affected by impaired olfactory and taste perceptions even months later.

Also read: Corona: course, treatment, symptoms of Covid-19

For this purpose, Lechien and team examined the data of 2581 COVID-19 patients from a total of 18 European hospitals, which were collected between March and June 2020. 85 percent of those affected would have one had a mild course of COVID-19, 4.3 percent had a moderate and 10.7 percent were seriously ill.

Smell disorders in 85.9 percent of corona infected people with a mild course

After Olfactory disorders When asked, 85.9 percent of the group with mild courses said they had been affected. For comparison: Among the patients who were moderately ill, only about 4.5 percent suffered from impairment of their sense of smell. In the case of people with severe courses, it was 6.9 percent.

According to the researchers, it took an average of three weeks before those affected could smell normal again. However, 25 percent of those questioned stated that they still suffered from impairment of their olfactory sense even after 60 days.

The authors around Mediziner Lechien emphasize, however, that the survey results of the seriously ill could be influenced by the fact that many of them were temporarily affected by a Nasogastric tube had to be fed.

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Parosmia: those affected smell fecal and burnt odor

Covid-19 infected people who recover from their illness also often report of Bad smells. This phenomenon is called parosmia. During the renewal phase of the affected nerve cells, patients simply smell wrong. For example, fecal odor, drain odor or burnt odor. This can be extremely stressful for those affected.

Also read: Corona studies show: Then infected people are particularly contagious

All in all, however, the sense of smell is recovering in most of the sick, according to the study by the French researchers. The scientists suspect that the olfactory disorder, especially in mildly ill patients, is due to a different response from that of severely ill patients Immune system could be due.

According to this, the virus would not spread as far in the body, but it would cause local inflammation of the olfactory system. Another hypothesis of the researchers is that the virus affects the nerve cells in the Olfactory bulb harm. In this case, the duration and severity of the odor disorders would depend on how many olfactory cells are affected.

Also interesting: Corona vaccine from Biontech: How does the mRNA vaccination work?

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