“…The infection spread across other countries round the world (Zhu et al). On January 30, 2020, the World Health Organization (WHO) stated the outbreak a Public Health Emergency of International Concern (Sohrabi et al, 2020).the symptoms of COVID-19 can be fever, dry cough, fatigue, shortness of breath, myalgia or even no symptoms (Diao et al, 2020, Wan et al, 2020, Zarghami et al, 2020.likewise, the studies revealed that older age, male gender, leukocytosis, and Blood laboratory findings, also, comorbidities such as high lactate dehydrogenase level, cardiac injury, hypertension, diabetes mellitus, hypothyroidism, coronary artery disease, smoking and hyperglycemia, were related to weak prognosis in COVID-19 patients (Zhang et al, 2020b, Zarghami et al, 2019.Though, information concerning to clinical features of COVID-19 is still making it difficult for physicians to distinguish the causative agents without related laboratory analysis (Wu and McGoogan, 2020).Furthermore, reverse transcriptionpolymerase chain reaction (RT-), the gold standard for confirming diagnosis of COVID-19, has some restrictions, such as false negative results and limited sampling method and the rate of high false negative and unavailability of in the early stage of the outbreak restricted fast diagnosis of infection in patients (Fang et al, 2020). The high resolution computed tomography (HRCT) of the chest is progressively recognized as a strong indicator for early diagnosis, and can be the key to the evaluation of COVID-19 suspected patients because the changes in chest imaging sometimes maybe earlier than symptoms (He et al, 2020).…”