"It began four years ago with a worldwide uptick of bacterial infections: meningitis in Frankfurt, cholera in Johannesburg, tuberculosis in New Delhi. Although the outbreaks spread aggressively and proved impervious to our drugs of last resort, public health officials initially dismissed them as unrelated. They were wrong. Antibiotic resistance soon roiled across the globe. Diseases long thought beaten came surging back. The death toll skyrocketed....