Explain me the pathophysiology of typhoid in simple exam oriented way

I'll start with a quick overview, then pull from the medical library for a thorough, exam-ready explanation.

Quick Answer: Typhoid (enteric fever) is caused by Salmonella typhi, which enters via the oral route, survives gastric acid, invades Peyer's patches in the ileum, multiplies inside macrophages, and disseminates hematogenously - producing systemic illness through intracellular survival and endotoxin release.

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Now let me search the medical library for typhoid pathophysiology content in parallel:

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Excellent results. Let me now read the most relevant sections in parallel - Robbins Pathology, Goldman-Cecil Medicine, and Sleisenger GI for comprehensive pathophysiology:

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