Coronaviruses are a diverse group of viruses infecting many different animals. They can cause mild to severe respiratory infections in humans. In 2002 and 2012 respectively, two highly pathogenic coronaviruses of zoonotic origin, severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV), appeared in humans and caused fatal respiratory disease, making emerging coronaviruses a new public health...