Summary: The possibility of a Rickettsial origin for symptoms of depression and psychotic disfunction has been suggested by French scientists (Ch. Nicolle, Giroud, Legag, Jadin, Bottero) in their published works. Hence 300 patients, diagnosed as suffering from depression, or other neuropsychiatric dysfunction have been treated with antibiotic where a positive indicaton of Rickettsial infection was revealed as follows:
1.Many symptoms of these patients were similar to those exhibited in chronic Rickettsial diseases. 2.The treatment followed the finding that their serum reacted positively to the Giroud micro-agglutination test.