Infection with Covid-19 can cause lasting damage to cognition and memory, with “brain fog” detectable in long and short-term sufferers of the disease, according to new research.
But the study, one of the most detailed efforts to describe the impact of Covid on mental acuity, showed that more severe cases can improve and the danger has become less acute as the coronavirus has mutated.
The paper, published in the New England Journal of Medicine on Wednesday, suggests people whose longer-term symptoms had resolved performed just as well in cognitive tests as those who had recovered swiftly from the initial infection.
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