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A bloodstream infection (BSI), also called sepsis, occurs when bacteria or fungi enter the blood and trigger a systemic inflammatory response. Early recognition is critical. Common symptoms include high fever, chills, rapid heartbeat (tachycardia), low blood pressure, confusion, shortness of breath, extreme fatigue, and decreased urine output. Skin may appear pale, clammy, or mottled. In severe cases, organ dysfunction can develop quickly. Patients with weakened immunity or recent surgery are at higher risk. Prompt diagnosis through blood cultures and laboratory markers like elevated lactate is essential. Timely treatment, often guided by a reliable ceftriaxone injection supplier, helps prevent life-threatening complications.