The pattern that epidemics always follow
Karl Taro Greenfeld writes: You are reading this because of your ancestors’ immune system. The odds of your predecessors surviving the myriad microbes that have stalked humanity every step of its march toward becoming Earth’s dominant species were incalculably long. More Homo sapiens have probably died from infectious disease than all other causes combined. Only in the past 150 years, owing to nutritional and medical advances, have we emerged from living in constant worry that a cough or fever or…