TL;DR
Cognitive impairment after Omicron infection is reversible for most patients, but a vulnerable minority suffer irreversible and even progressive decline, urging targeted long-term cognitive care.
The emergency phase of the pandemic is over, but millions still live with brain fog. New research shows that for most, the cognitive damage from Omicron is not permanent.
Most recovered
Chinese researchers followed more than 2,000 patients hospitalized with Omicron. Two years after discharge, two-thirds had no cognitive decline, and nearly a quarter who declined had recovered, scoring on average 3 points higher on reassessment.
A minority fared worse
About 11% experienced irreversible decline, and over a third of those continued to worsen. They had longer hospital stays, more severe COVID, and often high blood pressure.
Those over 60 faced four times the risk of progressive decline, and each reinfection doubled the risk. More education and vaccination offered some protection.
The researchers suggest early identification of high-risk patients for monitoring and rehabilitation, while broader vaccination may reduce the likelihood of progressive decline. Brain fog is not necessarily the end of the story; for most, time is on their side.
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