The Plague Cycle : The Unending War Between Humanity and Infectious Disease Class_JUNIOR READER (5 the rain pattered dismally against

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and tragic business of being alive and in love

The Plague Cycle : The Unending War Between Humanity and Infectious Disease Class_JUNIOR READER (5 the rain pattered dismally againstFor four thousand years, the size and vitality of cities, economies, and empires were heavily determined by infection. Striking humanity in waves, the cycle of plagues set the tempo of civilizational growth and decline, since common response to the threat was exclusion quarantining the sick or keeping them out. But the unprecedented hygiene and medical revolutions of the past two centuries have allowed humanity to free itself from the hold of epidemic