Fast Agent-Based Epi Models R package epiworldR version 0.14.0.0 CRAN Task View: Epidemiology (https://CRAN.R-project.org/view=Epidemiology) A flexible framework for Agent-Based Models (ABM), the 'epiworldR' package provides methods for prototyping disease outbreaks and transmission models using a 'C++' backend, making it very fast. It supports multiple epidemiological models, including the Susceptible-Infected-Susceptible (SIS), Susceptible-Infected-Removed (SIR), Susceptible-Exposed-Infected-Removed (SEIR), and others, involving arbitrary mitigation policies and multiple-disease models. Users can specify infectiousness/susceptibility rates as a function of agents' features, providing great complexity for the model dynamics. Furthermore, 'epiworldR' is ideal for simulation studies featuring large populations. Software Depends: R (>= 4.1.0) Imports: utils, parallel, methods LinkingTo: cpp11 Suggests: quarto, tinytest, netplot, igraph, data.table, DiagrammeR George Vega Yon <g.vegayon@gmail.com> Comprehensive R Archive Network (CRAN) George Vega Yon [aut, cre] (ORCID: <https://orcid.org/0000-0002-3171-0844>), Derek Meyer [aut] (ORCID: <https://orcid.org/0009-0005-1350-6988>), Andrew Pulsipher [aut] (ORCID: <https://orcid.org/0000-0002-0773-3210>), Susan Holmes [rev] (what: JOSS reviewer, ORCID: <https://orcid.org/0000-0002-2208-8168>), Abinash Satapathy [rev] (what: JOSS reviewer, ORCID: <https://orcid.org/0000-0002-2955-2744>), Carinogurjao [rev], Centers for Disease Control and Prevention [fnd] (Award number 1U01CK000585; 75D30121F00003) MIT + file LICENSE (https://CRAN.R-project.org/package=epiworldR/LICENSE) 2026-03-28 application/tgz https://CRAN.R-project.org/package=epiworldR doi:10.32614/CRAN.package.epiworldR