SEIR Age-Structured Epidemic

Legend

S Young

S Old

E Young

E Old

I Young

I Old

R Young

R Old

Parameters

Transmission β: 0.40 Incubation rate σ (1/days): 0.20 Recovery rate γ (1/days): 0.10 Youth-to-Youth mixing: 0.70 Vaccination rate (Old): 0.00 Old/Young mortality ratio: 5.0×

Outcomes

R₀ (approx):—

Peak I Young:—

Peak I Old:—

Total Deaths Young:—

Total Deaths Old:—

Day of Peak:—

Age-structured SEIR with a 2×2 contact matrix. Young=70%, Old=30% of population. Cross-immunity and mixing asymmetry create complex epidemic dynamics. Vaccination shifts susceptibles to recovered at model start.