The early cases of the coronavirus in humans began in December of 2019. The virus is considered to be a new virus and also affects animals, as well as humans. The virus can range from mild flu or cold-like symptoms in some people, to extreme disease in others and animals.
The precedent to the coronavirus which took place in eight thousand BC was known as the most common recent ancestor, also given the acronym of MCRA, however, in animal species of birds and bats, some researchers estimate that the most common recent ancestor to the coronavirus could be traced back fifty-five million years and more.