Figure 2. Diagram of viral detection in patient 1 (A) and 2 (B) with both detectable virus RNA in blood and anal swab. Illness day represents the patients with clear clinical symptoms such as fever, dry-coughing is labelled over the first line. ICU, CDC confirmed, and transfer indicates that the patient is in the ICU ward, CDC confirmation of viral positive, and transfer of patient out from ICU ward to another hospital to receive a higher level of medical care, respectively. Ct value from the pharyngeal, blood and the anal swab is shown.