The new coronavirus resembles a crown when viewed under a microscope, which is why it belongs to the coronavirus class. And coronaviruses are a large family of viruses that are known to cause colds, as well as more serious diseases such as Middle East Respiratory Syndrome (MERS) and Severe Acute Respiratory Syndrome (SARS). The new coronavirus in question is a new strain of coronavirus that has never been found in humans before, and is a variant of coronavirus, so it is called a new coronavirus.