Hindustan Times. A group of researchers from University of California has linked the brain fog to the way the Sars-CoV-2 virus affects a person’s spine.
The researchers analysed the cerebrospinal fluid of Covid-19 survivors and found elevated levels of proteins in some samples.
This indicated that some inflammation occurred as a result of an immune response to the virus, the researchers said. "It's possible that the immune system, stimulated by the virus, may be functioning in an unintended pathological way," Dr Joanna Hellmuth, senior author of the study.
The research has been published in Annals of Clinical and Translational Neurology. For the study, the researchers studied 32 Covid-19 survivors, of these, 22 patients reported cognitive issues.