Viruses, Pandemics, and ImmunityViruses, Pandemics, and Immunity explores how viruses emerge to cause pandemics, how our immune system combats them, and how diagnostic tests, vaccines, and antiviral therapies work. Throughout history, humans have contended with pandemics. Historical records frequently mention plagues, pestilence, and contagion; however, by the twenty first century, the devastation wrought by pandemics had largely been forgotten. The enormous human and economic toll