COVID-19 and SARS are both deadly – but different. SARS symptoms were quick to appear, making it easier to contain. Because health officials were able to contain it, the virus died off.
Some of the world’s worst diseases have come from animals. Bats, cows, camels and horses have all contributed. Now, scientists are working to know which animal introduced the new coronavirus.
Source: A clue to stopping coronavirus: Knowing how viruses adapt from animals to humans : The Conversation