(A) and (B) are the chest CTs from the asymptomatic super spreader patient A when admitted. There are no significant COVID-19 patchy lesions in this patient. (C) and (D) are the X-rays from Patient B on an 26th, Jan 27th, 2020, respectively. The pink dot indicates the patchy lesions in the inferior lobe of right lung (C). The yellow dot indicates the aggravation of the patchy lesion as the progression of the infection. (E) and (F) are the chest CTs from patient B on Jan 29th, 2020, which is four days before his death. The ground-glass lesions can be seen in blue (E) and red dots (F).