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Sepsis: Symptoms, Diagnosis, Prognosis

Sepsis — an extreme immune system response to an infection — can lead to organ failure and death if the condition is not diagnosed and treated quickly. This medical emergency affects about 1.7 million adults in the United States each year. (1) For the best outcome, it’s important to identify symptoms of sepsis early and get immediate medical care.

Here’s what you need to know about sepsis and severe sepsis, as well as information on how your doctor can diagnose this condition.

Sepsis occurs when chemicals released by the immune system to fight an infection cause widespread inflammation in the body. This condition can happen to anyone who has an infection, whether the infection is bacterial, viral, or fungal. (2)

Most cases of sepsis are caused by a bacterial infection, and certain groups of people are at higher risk for this complication. (3) This includes the elderly, children, and people who have a weaker immune system because of a chronic disease. (4)

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