autism; B cell lymphoma; behavior change; bipolar disorder; Borrelia burgdorferi; brain function; cerebrospinal fluid analysis; cognitive defect; coronavirus disease 2019; cytomegalovirus infection; depression; editorial; human; induced pluripotent stem cell; inflammation; influenza; major depression; mental disease; mental health; microflora; nervous system inflammation; neurosyphilis; nonhuman; pandemic; protozoon; SARS coronavirus; schizophrenia; syphilis; Treponema pallidum; gut brain axis