Before revision:  Numerical results show that the modification factor for quarantine, modification factor for isolation and transmission rate are quite effective in reduction of the COVID casesin Hubei. Thus, COVID is controllable by reducing contacts with infected people and increasing the efficiency of quarantine and isolation. Health care officials should supply medications, protective masks and necessary human resources in the affected areas .
After revision:  Thus, if limited resources are available, then investing on the quarantined individuals will be more fruitful in terms of reduction of cases .