“I’ve been conducting research into the incidence of influenza in the 1300s. There are clear indications that a series of influenza epidemics in the first half of the fourteenth century severely weakened the populace, thereby lowering their resistance in the Black Death.” He picked up an ancient-looking book. “I have found six separate references to outbreaks between October of 1318 and February of 1321.” He held up a book and began to read. “ ‘After the harvest there came upon all of Dorset a fever so fierce as to leave many dead. This fever began with an aching in the head and confusion in
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