SI model with demography

──────────────────────────────────────────── 🧠 Conceptual Overview In mathematical biology, the SI model with demography is a foundational framework for studying infections that persist for life. In contrast to closed-population SI models—where infection eventually spreads to every individual—the inclusion of demographic processes (births and deaths) fundamentally alters long-term dynamics. Continuous recruitment introduces new susceptible individuals, while mortality removes … Read more