Temporal trajectories of long-COVID symptoms in adults with 22 months follow-up in a prospective cohort study in Norway
Norway study followed people for 22 months starting in March 2020 prior to infection. Memory and concentration problems persisted after infection, and didn't attenuate with time.
“Memory or concentration problems and dyspnoea were long-COVID symptoms.
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Other long-COVID symptoms were anosmia, dysgeusia and fatigue…
…This can have profound effects on everyday functioning. The fact that cognitive symptoms are persistent, and most of the population have been, or will be, infected by the SARS-CoV-2 virus, makes it crucial that further research focuses on the pathophysiology, and treatment”