Table 1: Stages based on CT image in SARS-CoV-2 virus.

S. No Stages based on CT image Conditions according to each stage
1 Ultra-early stage No clinical manifestation in this stage, laboratory results are negative but tests positive for throat swab generally between 1-2 weeks after exposure to contaminated areas.
2 Early stage Initial period within three days once encountered with cold, wheeze, dry cough, pyrexia etc., it shows particular numerous strewed irregulars or groups of ground-glass opacities, and divided by beehive-like stiffen interlobular septa.
3 Rapid Progression stage Period of three to seven days after being influenced by the virus, a merged &huge-scale light coalesce with air-bronchogram inside was manifested by CT.
4 Consolidation stage Period of about one to two weeks after exposure to clinical manifestation, CT image portrayed several strewed coalesce in lower density and lesser range than the before stage.
5 Dissipation stage Hardly between 2-3 weeks after clinical manifestation, furthermore was the range of lesions reduced. Patchy consolidation or strip-like opacity was shown by CT image, after sometime grid-like denser interlobular septum, thickening and strip-like twist of bronchial wall and less scattered patchy consolidations was observed.