This micrograph image depicts a gastrointestinal bacteria that can become pathogenic after trauma, surgery or other disruptions. Smith Collection/Gado via Getty Images hide caption toggle caption Smith Collection/Gado via Getty Images One of the pillars of modern medicine is showing its cracks, according to a new report from the World Health Organization. Antibiotics have turned once-deadly infections into minor inconveniences. They make lifesaving interventions, from surgery to chemotherapy, ...