Home▸Medicine & Biophysics▸Herd Immunity Threshold: 1 - 1/R0 Vaccination Simulator (2D)

💉 Herd Immunity Threshold: 1 - 1/R0 Vaccination Simulator (2D)

Interactive 2D herd-immunity-threshold simulator. Adjust R₀ and vaccinated fraction, watch the real formula HIT = 1 − 1/R₀ computed live, and infect a random person to see whether an outbreak is contained or spreads through the population grid.

Medicine & Biophysics2DEasy60 FPS📱 Mobile-adapted⇄ 3D version

⚙ Under the hood

Adjust R0 and vaccinated fraction to compute the real herd immunity threshold, HIT = 1 - 1/R0. Infect a random person on the population grid and watch whether the outbreak spreads or is contained once vaccination coverage passes that threshold.

herd immunityvaccinationepidemiologyR0thresholdpopulation grid

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install