Work On Influenza
His career-long interest in the manner of transmission of the influenza virus was first stirred by the great epidemic of 1932-3, the year in which he entered general practice. It culminated in a book, published in 1992 that questioned the theory of person-to-person transmission being enough to explain the simultaneous appearance of influenza in places far apart. His initial hypothesis proposed that the cause of influenza epidemics during winter may be connected to a seasonal influence. His later research suggested that the correlation may be due in part to a lack of vitamin D during the wintertime. His findings were based not only on observation in his practice, but also on extensive historical research into past epidemics.
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