Abriefintroductiontotheformulationofvarioustypesofstochasticepidemicmodelsispresentedbasedonthewell-knowndeterministicSISandSIRepidemicmodels.Threedifferenttypesofstochasticmodelformulationsarediscussed:discretetimeMarkovchain,continuoustimeMarkovchainandstochasticdifferentialequations.P