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Blood–brain barrier disruption and sustained systemic inflammation in individuals with long COVID-associated cognitive impairment

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Vascular disruption has been implicated in coronavirus disease 2019 (COVID-19) pathogenesis and may predispose to the neurological sequelae associated with long COVID, yet it is unclear how blood–brain barrier (BBB) function is affected in these conditions. Here we show that BBB disruption is evident during acute infection and in patients with long COVID with cognitive impairment, commonly referred to as brain fog. Using dynamic contrast-enhanced magnetic resonance imaging, we show BBB disruption in patients with long COVID-associated brain fog. Blood–brain barrier disruption and sustained systemic inflammation in individuals with long COVID-associated cognitive impairment | Nature Neuroscience

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