The new British research is the first to reveal striking differences in areas of the brain based on scans taken before and after a coronavirus infection.
in Cell in February found that a coronavirus infection of various cells in the nasal cavity gives rise to inflammation that inhibits the functioning of smell-receptor proteins on nerve cells, leading to smell loss.
Whether these changes will persist over the long term remains unknown. Douaud is hoping to conduct a third round of brain scans. Deeks, who is directing a major cohort study of people suffering from persistent symptoms following a coronavirus infection, noted a limitation of the new study. Those who got Covid, he pointed out, had some differences in their baseline cognitive function and in some of the initial brain scans compared with those who did not get the disease.
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