Toxoplasma. Gondii can produce psychotic symptoms similar to those displayed by persons with schizophrenia^. Some reports of acute toxoplasmosis in adults produce signs such as delusions and hallucinations also Herpes simplex virus 1 and 2 (HSV-1 and HSV-2), also known as human herpes virus 1 and 2 (HHV-1 and HHV-2), are two members of the herpes virus family, Herpesviridae, that infect humans are ubiquitous and contagious