Research Article

Deterministic and Stochastic Dynamics of COVID-19: The Case Study of Italy and Spain

Table 4

Possible changes of states and their probabilities.

Possible state changeProbability of state change

Change when people meet young infective and then population becomes exposed
Change when people meet old infective and then population becomes exposed
Change when people meet hospitalized and then population becomes exposed
Change when young exposed with mild symptoms meet young infective and then population becomes infected
Change when young exposed with mild symptoms meet old infective and then population becomes infected
Change when young exposed people move to young infected class
Change when young infective join hospitalized class
Disease-related death rate of young infected population
Change when old people meet young infective and then population becomes exposed
Change when old people meet old infective and then population becomes exposed
Change when old susceptible meet hospitalized and then population becomes exposed
Change when old exposed with mild symptoms meet young infective and then population becomes infected
Change when old exposed with mild symptoms meet old infective and then population becomes infected
Change when young exposed people move to young infected class
Disease-related death rate of young infected population
Change when old infective join hospitalized class
Change when hospitalized people join recover class
Disease-related death rate of hospitalized population
No change