The article says it's both. > "For the first time, we have been able to show that leaky blood vessels in the human brain, in tandem with a hyperactive immune s

The article says it's both. > "For the first time, we have been able to show that leaky blood vessels in the human brain, in tandem with a hyperactive immune system may be the key drivers of brain fog associated with Long COVID. ..." — Prof. Matthew Campbell, Professor in Genetics and Head of Genetics at Trinity, and Principal Investigator at FutureNeuro. As for healing, I'd think blood vessels could! The article doesn't say whether it's an autoimmune problem, so I suspect the researchers are being conservative or don't know? > "The concept that many other viral infections that lead to post-viral syndromes might drive blood vessel leakage in the brain is potentially game changing and is under active investigation by the team.” — also Prof. Campbell