The 2019–20 COVID-19 outbreak is a viral epidemic which started in mainland China but has since spread to several other countries and territories. The Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) was first identified in Wuhan, the capital of China's Hubei province. It is an enveloped single-stranded RNA virus. The particles are decorated with petal-shaped surface projections which are reminiscent of the solar corona. These viruses are found in many vertebrate species and cause respiratory diseases, such as the common cold or SARS. The more recent SARS-CoV-2 has emerged from a still unknown animal reservoir and can be transmitted from human to human.
Two copies of the 3C-like hydrolase (P0DTD1 -PRO_0000449623)