Seasonal variation and temporal relationship to the COVID-19 pandemic of NMDA receptor antibody results.

However, case reports of NMDA receptor antibody encephalitis occurring in the context of infection with I Haemophilus influenzae i , human herpesvirus 6, mumps virus, I Enterovirus i , I Mycoplasma pneumoniae i and Japanese encephalitis virus have been reported [[3]], but the most robust association is with herpes simplex encephalitis, which one study found to be followed within a year by NMDA receptor antibody encephalitis in 18% of individuals [[5]]. The other potential effect is that the restrictions instituted by many countries could have suppressed the circulation of other infectious agents that may trigger NMDA receptor antibody encephalitis. Dear Sirs, I N i -methyl d-aspartate (NMDA) receptor antibody encephalitis, since its description in 2007, has emerged as one of the most common causes of encephalitis among young people in the developed world [[1]]. Most importantly, there are limitations in this study's face validity in that it measured antibody results rather than actual diagnoses of NMDA receptor antibody encephalitis. [Extracted from the article]