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The emergence and spread of COVID-19 since December, 2019, has brought great challenges to global public health. As of April 23, 2020, more than 2•5 million confirmed cases and more than 175 000 deaths had been reported globally. 1 Respiratory tract manifestations such as fever and cough are the most commonly reported symptoms in patients with COVID-19. 2 Evidence of digestive system involvement in patients with COVID-19 was first reported by a group in China. 3 Emerging data showed that the gastrointestinal tract and liver might also represent target organs of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on the basis of the findings that angiotensin-converting enzyme 2 (ACE2), the major receptor of SARS-CoV-2, is expressed in the gastro intestinal tract as well as liver cells. 4 The detection of SARS-CoV-2 viral RNA in patients' stool and the potential for faecal-oral transmission has raised