How do diseases actually begin—and why does that matter to epidemiologists? In this episode, we explain what pathogenesis is, how diseases develop at the biological level, and why understanding pathogenesis is essential in epidemiology. You’ll learn how pathogenesis connects with epidemiology through molecular pathological epidemiology (MPE), how molecular mechanisms influence disease progression, and how this knowledge supports disease prevention, risk stratification, and targeted public health interventions.

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