IntroductionThe potential role of pathogens, particularly vector-transmitted infectious agents, as a cause of psychosis has not been intensively investigated...
(…)Cat scratch disease occurs worldwide. Cats are the main reservoir of Bartonella henselae, and the bacterium is transmitted to cats by the cat flea Ctenocephalides felis.[29] Infection in cats is very common with a prevalence estimated between 40 and 60%, younger cats being more commonly infective. (…)
https://en.m.wikipedia.org/wiki/Bartonellosis
One more reason to despise cats :