The most timely and informative history book you will read this year, tracing a century of pandemics, with a new chapter on COVID-19. Ever since the 1918 Spanish influenza pandemic, scientists have dreamed of preventing catastrophic outbreaks of infectious disease. Yet, despite a century of medical progress, viral and bacterial disasters continue to take us by surprise, inciting panic and dominating news cycles. A history of global contagion from the Spanish flu to Covid-19.