Public Health Budget Allocation Simulator

Budget Allocation (100 units/week)

💉 Vaccination outreach 30

📣 Awareness campaigns 25

Vaccination Awareness Sanitation 45

Outbreak Parameters

Baseline R₀ 3.5

Simulation speed 1×

Live Readouts

Day

Effective R

3.50

Peak infected

0.0%

Ever infected

0.0%

How it works

Population fractions move through an SEIR compartment model, integrated day-by-day with a fixed-population Euler step (N = 100%):

dS/dt = -β·S·I
dE/dt =  β·S·I - σ·E
dI/dt =  σ·E - γ_eff·I
dR/dt =  γ_eff·I

Your weekly budget (100 units) splits three ways, each with diminishing returns via a saturating k/(k+x) response so no single lever can zero out the outbreak alone:

Vaccination moves a share of Susceptible straight into Recovered before day 0, shrinking the pool the virus can reach.
Sanitation (the remainder after the two sliders) scales down β, the transmission rate, by reducing contact/exposure risk.
Awareness raises γ_eff, the effective removal rate, by getting symptomatic people to self-isolate sooner — shortening the infectious window rather than blocking transmission.

Effective reproduction number shown live: R_eff = (β_eff / γ_eff) · S. Each colored sphere in the 3D field is one cohort of the population, stochastically re-colored every tick to match the current S/E/I/R fractions, and the bar tower on the right traces the last 60 days of the infected fraction.

Week 1

Susceptible Exposed Infected Recovered/Immune

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