New Scientist is carrying this report discussing new discoveries related to toxoplasmosis, cats, rats, and human schizophrenia:

Antipsychotic drugs can limit the behavioural abnormalities associated with a parasitic infection called toxoplasmosis in some rats – the condition causes them to become “suicidally” attracted to cats. The findings provide insight into a possible cause of schizophrenia, say the researchers behind the new study.

While the article's author does throw in a reference to everyone's favorite cat-blamer E. Fuller Torrey, the authors of the study take pains to point out in no way are they trying to implicate toxo infections as a cause of schizophrenia. From the article, it would appear more likely that the toxo parasite perhaps does something that manipulates at least some of the same brain areas, causing a disease which is quite similar. A subtle difference, but quite important for future research.

Plus the whole concept of a parasite that tricks its host into becoming attracted to a specific kind of predator just to complete its life cycle is just amazing. Sounds like something out of a Star Trek episode.