Cognitive decline 'measurable' in those with lasting COVID symptoms Researchers have found that there is 'measurable' cognitive decline in people who had COVID-19, particularly in those whose symptoms persisted after 12 months, though these may not be severe or long-lived. Finn Cohen

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Those who received at least two vaccinations and had fewer repeat infections, and those who were infected with later variants of SARS-CoV-2 had lower measures of cognitive decline.

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