📈 Differential Infectivity: Decoding Stage-Structured Transmission in SEIR Models 🧬
🏗️ Conceptual Overview For many pathogens, infectiousness is not constant over the course of illness. Viral load, symptom severity, and contact behavior often vary markedly between early, peak, and late stages of infection. The Differential Infectivity (Stage-Structured) SEIR Model extends the classical SEIR framework by dividing the infectious period into multiple sequential stages, each with … Read more