Fig. 4

Timeline of sampling with various information. Patients only day 0 samples are gathered on the left panel while those with multiple samples are shown on the right panel. Patients who died are labelled in red. The border of circles represents ventilated (red) and non-ventilated (blue) state, where SARS-CoV-2 PCR results in rectal swabs are written as positive ( +) and negative (-). The number of days after symptom onset is indicated at the left bottom side of day 0. One sample from P51 is lacking the PCR result. The gradient color inside (orange scale) and outside (green scale) circles show the number of treated antibiotics and Shannon index, respectively