Epidemic simulation. Inspired by Washington Post graphic by Harry Stevens, March 14, 2020. https://www.washingtonpost.com/graphics/2020/world/corona-simulator/?itid=sf_ These are the four types of individuals. * Mobile. Susceptible, on the move. Blue (or green) circle, O. * Static. Susceptible, stay at home. Smaller, darker blue circle, o. * Infected. Infects other susceptible individuals within distance "radius". Red-orange asterisk, *. * Immune. Was infected for "duration" steps. No longer infectious. Darker red x. These are the seven controllable parameters, with their starting values. n = 50; population size infected = .10; initial infected fraction static = .20; static fraction radius = .03; infectious distance duration = 200; time of infection speed = .03; speed of propagation barrier = .80; barrier height The epidemic starts in the upper right quadrant. The epidemic ends when all infected individuals have become immune. Folders named covid19 Desktop\covid19
The animation begins with 5 infections in the upper right quadrant. There are 45 unaffected.
The animation ends when there is no more infection. Three individuals have never been infected.
Final frame with complete barrier. Left half is not infected.
One individual is never infected.
Everybody is eventually infected, and in fewer time steps.
The code is one of the experiments in version 5.0 of Cleve_Lab on the MATLAB Central File Exchange, available here.
The code is on the File Exchange by itself, available here.
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