How tiny germs made the world as we know it According to Jonathan Kennedy, a teacher in global health, pathogens have played a bigger role in historical events than we give credit for. History's narrative arc is usually described as one of great men and superior civilisations, the world mere putty awaiting the hands of god. But what if it was pathogens – smallpox and malaria for example – that have really given conquering armies their competitive edge? Jonathan Kennedy argues that this is very much the case. From the fate of Neanderthals to the American Civil War, pathogens have played a major role in aiding one side against the other. Societies with no immunity to introduced diseases didn't have a hope. The most famous historical example is the Spanish conquest of the Mexica and Inka Empires. The population was brutally swathed by smallpox, allowing the Spanish victory with only a few hundred soldiers. The mosquito-borne virus yellow fever allowed immune Haitian rebels to win independence from Napoleon's France. French soldiers didn't stand a chance against the virus. Pathogenesis provides example after example of killer diseases changing the course of history. Kennedy even argues the Medieval plague helped kick start the capitalist revolution. By drastically reducing the number of farmers, it gave them more bargaining power and the incentive to maximise profits. Written in lively and engaging prose, and weaving in amusing literary allusions from Genesis to Tolkein, this is a compelling history that will appeal to readers of Sapiens and Guns, Germs and Steel. Pathogenesis, Jonathan Kennedy. Published by Random House. $35 Review by Chris Saliba Comments are closed.
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