Summary
This study in the journal Acta Neuropathologica Communications examined neuropathological findings of patients who died following hospitalisation in an intensive care unit with Covid-19. The researchers conducted brain autopsy on 20 people who had died, followed by ex-vivo imaging and dissection. They found that acute tissue injuries and microglial activation were the most common abnormalities discovered in Covid-19 brains. They also found evidence of encephalitis-like changes despite the lack of detectable virus. The majority of older subjects showed age-related brain conditions even in the absence of known neurologic disease. The findings of this study suggest that acute brain injury alongside common pre-existing brain disease may put older subjects at higher risk of post-Covid neurological issues.
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