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Summary  Sepsis, also known as septicemia, is one of the 10 leading causes of death worldwide. The rising tide of sepsis due to bacterial, fungal and viral infections cannot be stemmed by current antimicrobial therapies and supportive measures. New paradigms for the mechanism and resolution of sepsis and consequences for sepsis survivors are emerging. Consistent with Benjamin Franklin's dictum ‘an ounce of prevention is worth a pound of cure’, sepsis can be prevented by vaccinations against pneumococci and meningococci. Recently, the  NIH NHLBI  Panel redefined sepsis as ‘severe endothelial dysfunction syndrome in response to intravascular and extravascular infections causing reversible or irreversible injury to the microcirculation responsible for multiple organ failure’. Microvascular endothelial injury underlies sepsis‐associated hypotension, edema, disseminated intravascular coagulation, acute respiratory distress syndrome and acute kidney injury. Microbial genome products trigger ‘genome wars’ in sepsis that reprogram the human genome and culminate in a ‘genomic storm’ in blood and vascular cells. Sepsis can be averted experimentally by endothelial cytoprotection through targeting nuclear signaling that mediates inflammation and deranged metabolism. Endothelial ‘rheostats’ (e.g. inhibitors of  NF ‐κB, A20 protein,  CRADD / RAIDD  protein and micro RNA s) regulate endothelial signaling. Physiologic ‘extinguishers’ (e.g. suppressor of cytokine signaling 3) can be replenished through intracellular protein therapy. Lipid mediators (e.g. resolvin D1) hasten sepsis resolution. As sepsis cases rose from 387 330 in 1996 to 1.1 million in 2011, and are estimated to reach 2 million by 2020 in the  US , mortality due to sepsis approaches that of heart attacks and exceeds deaths from stroke. More preventive vaccines and therapeutic measures are urgently needed.

New paradigms in sepsis: from prevention to protection of failing microcirculation