Case 2 was a female nurse in her 20s. She experienced headache and pharyngalgia but no fever on 29 January (Figure 2). Throat swab tests for SARS-CoV-2 were positive on 31 January and 2 February. However, chest CT showed no abnormalities on 2 February. This patient was admitted to hospital on 5 February. Throat swab test remained positive on 6 February and turned negative on 10 and 12 February. Stool was not tested in Case 2.