The viral infection theory of schizophrenia suggests that schizophrenia is caused by exposure to an influenza virus or other viral infection during prenatal development or shortly after birth.

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The viral infection theory of schizophrenia proposes that exposure to a viral infection, particularly an influenza virus, during prenatal development or shortly after birth increases the risk of developing schizophrenia later in life. While this theory is not a proven cause of schizophrenia, some studies have provided support for the association between viral infections and schizophrenia.

The Viral Infection Theory of Schizophrenia Suggests That Schizophrenia Is