As far as I know, such an epidemic comes every 100 years. This crisis will also become normal as all past epidemics have been enduring. But it will seize some time to become normal. Another crucial point is that it will take a long time for the economic dilemma to return to normal for all countries.
Yes, epidemics have happened in the past. However, now the relationship between the economies of different countries around the world or the high mobility of people, a return to normalcy is extremely difficult to assess due to the possibility of a relapse of the epidemic.