Before revision:  We also assume that the virus leads to severe acute respiratory syndrome in about one percent of cases, which in turn almost surely lead to respiratory default and death, unless the patient receives an appropriate medical treatment supported by respiratory ventilation. For other parameters , like mortality rate or the number of respiratory ventilators per million of inhabitants, we take values typical for developed countries.
After revision:  We also assume that the virus leads to severe acute respiratory syndrome in about one percent of cases, which in turn almost surely lead to respiratory default and death, unless the patient receives an appropriate medical treatment . The~healthcare system capacity is simulated by the availability of respiratory ventilators or intensive care beds. Some parameters of the model , like mortality rate or the number of respiratory ventilators per million of inhabitants, we take values typical for developed countries.