Many people are dying in the whole world due to coronavirus every day. The novel coronavirus is the cause of mass death in many countries. It is an RNA virus. This disease started in Wuhan, China on November 17, 2019. It was a wild type of coronavirus. Studies on RNA viruses have shown that they have a certain potential for modification. Modifications to viruses can cause the complete vanishing of the virus or create a new version of it. Similarly, with time, the wild type of this virus is also showing mutations and new variants of this virus are emerging.