[R] researchers found that people with high genetic risk of schizophrenia and who also presented high levels of Epstein-Barr virus antibibodies had an increased probability to pertain to the schizophrenia group — more than eight times higher, to be precise. Also, among participants with schizophrenia, around 10 percent had both high levels of antibodies against this type of herpes virus and a higher genetic risk for schizophrenia, compared with only a little over 1 percent of the participants in the control group. The study did not seek to establish cause and effect relationships, but the researchers suggest that preventing infection...