Vaccine Exemption & Herd Immunity Simulator

Effective Rt (Est.) 1.095

Herd Immunity Status BREACHED

HIT Threshold 93.3%

Active Cases 1

Secondary Attack Rate 78.0%

Vulnerable Clusters 5 Schools

Simulation Parameters

Pathogen Preset

State Exemption Rate 3.3% (96.7% Vax)

Exemption Clustering Index 0.65 (High Pockets)

CDC Trend Scenario

Vaccinated (Protected)

Susceptible (Exempt)

Exposed (Incubating)

Infectious (Spreading)

Recovered / Immune

⚠️ Herd Protection Subverted: While statewide coverage is ~92.7% (near threshold), spatial exemption clustering has created 5 vulnerable school cohorts where local coverage drops below 85%, allowing sustained measles transmission chains.

District Demographics

12 Elementary Schools • 120 Students/Cohort • 1,440 Total Population.
Click any classroom node on the grid to manually introduce or isolate cases.