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Sense of smell can be altered for 5 months or more after acute SARS-CoV-2 infection, Canadian researchers reported.
Nearly one in five healthcare workers who had a compromised sense of smell when they first were infected reported persistent olfactory changes 150 days later, said Johannes Frasnelli, MD, of the University of Quebec at Trois-Rivieres, and colleagues, in a preliminary report released in advance of the American Academy of Neurology annual meeting.
The findings are based on 813 Quebec healthcare workers who tested positive for SARS-CoV-and completed online questionnaires and home chemosensory tests an average of 5 months after diagnosis. Most participants (84%) were women.