Maternal and intrauterine infections are notably common, so one question is that if schizophrenia is infectious in origin, why aren't more offspring born with schizophrenia?

母婴感染是非常常见的，所以人们很容易提出这样的质疑：假如感染是精神分裂症的病因，为什么没有更多的新生儿成为患者呢？