It was a hypothesis about how so many kids born in Dec, Jan and Feb are bipolar and schizophrenic or schizoaffective. I am reading a book by a stand-up comic named Paul Jones, who is bipolar, The Up and Down Life) and he mentioned it in his book, and says there is a hypothesis about it being a latent virus. But I am wondering about schizophrenia in warm climates ... Hawaii, Australia, you get the idea. Do those countries see the same pattern? Would the hypothesis hold up? He calls it a theory but I don't think there's enough evidence yet to make it a theory. Still, considering that I know several bipolar people who were all born in Dec. and January, and one who is schizophrenic, it does seem to be a weird coincidence.